diff --git a/cmd/osdsapiserver/osdsapiserver.go b/cmd/osdsapiserver/osdsapiserver.go
index 2dcc3eb5b..aa8d1dfbc 100644
--- a/cmd/osdsapiserver/osdsapiserver.go
+++ b/cmd/osdsapiserver/osdsapiserver.go
@@ -20,26 +20,24 @@ This module implements a entry into the OpenSDS REST service.
 package main
 
 import (
+	"flag"
+
 	"github.com/opensds/opensds/pkg/api"
 	"github.com/opensds/opensds/pkg/db"
 	. "github.com/opensds/opensds/pkg/utils/config"
-	"github.com/opensds/opensds/pkg/utils/constants"
 	"github.com/opensds/opensds/pkg/utils/daemon"
 	"github.com/opensds/opensds/pkg/utils/logs"
 )
 
 func init() {
-	// Get the default global configuration.
-	def := GetDefaultConfig()
-
-	// Parse some configuration fields from command line.
-	flag := &CONF.Flag
-	flag.StringVar(&CONF.OsdsApiServer.ApiEndpoint, "api-endpoint", def.OsdsApiServer.ApiEndpoint, "Listen endpoint of api-server service")
-	flag.DurationVar(&CONF.OsdsApiServer.LogFlushFrequency, "log-flush-frequency", def.OsdsApiServer.LogFlushFrequency, "Maximum number of seconds between log flushes")
-	flag.BoolVar(&CONF.OsdsApiServer.Daemon, "daemon", def.OsdsApiServer.Daemon, "Run app as a daemon with -daemon=true")
-
 	// Load global configuration from specified config file.
-	CONF.Load(constants.OpensdsConfigPath)
+	CONF.Load()
+
+	// Parse some configuration fields from command line. and it will override the value which is got from config file.
+	flag.StringVar(&CONF.OsdsApiServer.ApiEndpoint, "api-endpoint", CONF.OsdsApiServer.ApiEndpoint, "Listen endpoint of api-server service")
+	flag.DurationVar(&CONF.OsdsApiServer.LogFlushFrequency, "log-flush-frequency", CONF.OsdsApiServer.LogFlushFrequency, "Maximum number of seconds between log flushes")
+	flag.BoolVar(&CONF.OsdsApiServer.Daemon, "daemon", CONF.OsdsApiServer.Daemon, "Run app as a daemon with -daemon=true")
+	flag.Parse()
 
 	daemon.CheckAndRunDaemon(CONF.OsdsApiServer.Daemon)
 }
diff --git a/cmd/osdsdock/osdsdock.go b/cmd/osdsdock/osdsdock.go
index d6a968458..502a3e319 100755
--- a/cmd/osdsdock/osdsdock.go
+++ b/cmd/osdsdock/osdsdock.go
@@ -20,27 +20,25 @@ This module implements a entry into the OpenSDS REST service.
 package main
 
 import (
+	"flag"
+
 	"github.com/opensds/opensds/pkg/db"
 	"github.com/opensds/opensds/pkg/dock"
 	. "github.com/opensds/opensds/pkg/utils/config"
-	"github.com/opensds/opensds/pkg/utils/constants"
 	"github.com/opensds/opensds/pkg/utils/daemon"
 	"github.com/opensds/opensds/pkg/utils/logs"
 )
 
 func init() {
-	// Get the default global configuration.
-	def := GetDefaultConfig()
-
-	// Parse some configuration fields from command line.
-	flag := &CONF.Flag
-	flag.StringVar(&CONF.OsdsDock.ApiEndpoint, "api-endpoint", def.OsdsDock.ApiEndpoint, "Listen endpoint of dock service")
-	flag.StringVar(&CONF.OsdsDock.DockType, "dock-type", def.OsdsDock.DockType, "Type of dock service")
-	flag.BoolVar(&CONF.OsdsDock.Daemon, "daemon", def.OsdsDock.Daemon, "Run app as a daemon with -daemon=true")
-	flag.DurationVar(&CONF.OsdsDock.LogFlushFrequency, "log-flush-frequency", def.OsdsLet.LogFlushFrequency, "Maximum number of seconds between log flushes")
-
 	// Load global configuration from specified config file.
-	CONF.Load(constants.OpensdsConfigPath)
+	CONF.Load()
+
+	// Parse some configuration fields from command line. and it will override the value which is got from config file.
+	flag.StringVar(&CONF.OsdsDock.ApiEndpoint, "api-endpoint", CONF.OsdsDock.ApiEndpoint, "Listen endpoint of dock service")
+	flag.StringVar(&CONF.OsdsDock.DockType, "dock-type", CONF.OsdsDock.DockType, "Type of dock service")
+	flag.BoolVar(&CONF.OsdsDock.Daemon, "daemon", CONF.OsdsDock.Daemon, "Run app as a daemon with -daemon=true")
+	flag.DurationVar(&CONF.OsdsDock.LogFlushFrequency, "log-flush-frequency", CONF.OsdsDock.LogFlushFrequency, "Maximum number of seconds between log flushes")
+	flag.Parse()
 
 	daemon.CheckAndRunDaemon(CONF.OsdsDock.Daemon)
 }
diff --git a/cmd/osdslet/osdslet.go b/cmd/osdslet/osdslet.go
index 701b61584..920f3a3d4 100755
--- a/cmd/osdslet/osdslet.go
+++ b/cmd/osdslet/osdslet.go
@@ -20,26 +20,24 @@ This module implements a entry into the OpenSDS REST service.
 package main
 
 import (
+	"flag"
+
 	c "github.com/opensds/opensds/pkg/controller"
 	"github.com/opensds/opensds/pkg/db"
 	. "github.com/opensds/opensds/pkg/utils/config"
-	"github.com/opensds/opensds/pkg/utils/constants"
 	"github.com/opensds/opensds/pkg/utils/daemon"
 	"github.com/opensds/opensds/pkg/utils/logs"
 )
 
 func init() {
-	// Get the default global configuration.
-	def := GetDefaultConfig()
-
-	// Parse some configuration fields from command line.
-	flag := &CONF.Flag
-	flag.StringVar(&CONF.OsdsLet.ApiEndpoint, "api-endpoint", def.OsdsLet.ApiEndpoint, "Listen endpoint of controller service")
-	flag.BoolVar(&CONF.OsdsLet.Daemon, "daemon", def.OsdsLet.Daemon, "Run app as a daemon with -daemon=true")
-	flag.DurationVar(&CONF.OsdsLet.LogFlushFrequency, "log-flush-frequency", def.OsdsLet.LogFlushFrequency, "Maximum number of seconds between log flushes")
-
 	// Load global configuration from specified config file.
-	CONF.Load(constants.OpensdsConfigPath)
+	CONF.Load()
+
+	// Parse some configuration fields from command line. and it will override the value which is got from config file.
+	flag.StringVar(&CONF.OsdsLet.ApiEndpoint, "api-endpoint", CONF.OsdsLet.ApiEndpoint, "Listen endpoint of controller service")
+	flag.BoolVar(&CONF.OsdsLet.Daemon, "daemon", CONF.OsdsLet.Daemon, "Run app as a daemon with -daemon=true")
+	flag.DurationVar(&CONF.OsdsLet.LogFlushFrequency, "log-flush-frequency", CONF.OsdsLet.LogFlushFrequency, "Maximum number of seconds between log flushes")
+	flag.Parse()
 
 	daemon.CheckAndRunDaemon(CONF.OsdsLet.Daemon)
 }
diff --git a/examples/opensds.conf b/examples/opensds.conf
index b884b2ba1..145ec43c9 100755
--- a/examples/opensds.conf
+++ b/examples/opensds.conf
@@ -14,7 +14,6 @@
 
 [osdsapiserver]
 api_endpoint = 0.0.0.0:50040
-log_file = /var/log/opensds/osdsapiserver.log
 auth_strategy = keystone
 # If https is enabled, the default value of cert file
 # is /opt/opensds-security/opensds/opensds-cert.pem,
@@ -27,11 +26,9 @@ password_decrypt_tool = aes
 
 [osdslet]
 api_endpoint = 0.0.0.0:50049
-log_file = /var/log/opensds/osdslet.log
 
 [osdsdock]
 api_endpoint = 0.0.0.0:50050
-log_file = /var/log/opensds/osdsdock.log
 # Choose the type of dock resource, only support 'provisioner' and 'attacher'.
 dock_type = provisioner
 # Specify which backends should be enabled, sample,ceph,cinder,lvm and so on.
diff --git a/pkg/utils/config/config.go b/pkg/utils/config/config.go
index 79909bd92..267661a63 100755
--- a/pkg/utils/config/config.go
+++ b/pkg/utils/config/config.go
@@ -15,15 +15,18 @@
 package config
 
 import (
-	gflag "flag"
+	"flag"
 	"fmt"
 	"log"
+	"os"
 	"reflect"
+	"regexp"
 	"strconv"
 	"strings"
 	"time"
 
 	"github.com/go-ini/ini"
+	"github.com/opensds/opensds/pkg/utils/constants"
 )
 
 const (
@@ -225,9 +228,6 @@ func parseSections(cfg *ini.File, t reflect.Type, v reflect.Value) error {
 	for i := 0; i < t.NumField(); i++ {
 		field := v.Field(i)
 		section := t.Field(i).Tag.Get("conf")
-		if "FlagSet" == field.Type().Name() {
-			continue
-		}
 		if "" == section {
 			if err := parseSections(cfg, field.Type(), field); err != nil {
 				return err
@@ -262,11 +262,23 @@ func GetDefaultConfig() *Config {
 	return conf
 }
 
-func (c *Config) Load(confFile string) {
-	gflag.StringVar(&confFile, "config-file", confFile, "The configuration file of OpenSDS")
-	c.Flag.Parse()
-	initConf(confFile, CONF)
-	c.Flag.AssignValue()
+func GetConfigPath() string {
+	path := constants.OpensdsConfigPath
+	for i := 1; i < len(os.Args)-1; i++ {
+		if m, _ := regexp.MatchString(`^-{1,2}config-file$`, os.Args[i]); m {
+			if !strings.HasSuffix(os.Args[i+1], "-") {
+				path = os.Args[i+1]
+			}
+		}
+	}
+	return path
+}
+
+func (c *Config) Load() {
+	var dummyConfigPath string
+	// Flag 'config-file' is set here for usage show and parameter check, the config path will be parsed by GetConfigPath
+	flag.StringVar(&dummyConfigPath, "config-file", constants.OpensdsConfigPath, "OpenSDS config file path")
+	initConf(GetConfigPath(), CONF)
 }
 
 func GetBackendsMap() map[string]BackendProperties {
diff --git a/pkg/utils/config/config_define.go b/pkg/utils/config/config_define.go
index 4644685eb..d36d8e9f6 100755
--- a/pkg/utils/config/config_define.go
+++ b/pkg/utils/config/config_define.go
@@ -94,5 +94,4 @@ type Config struct {
 	OsdsDock          `conf:"osdsdock"`
 	Database          `conf:"database"`
 	KeystoneAuthToken `conf:"keystone_authtoken"`
-	Flag              FlagSet
 }
diff --git a/pkg/utils/config/config_test.go b/pkg/utils/config/config_test.go
index 02f25b046..9c3c1254f 100755
--- a/pkg/utils/config/config_test.go
+++ b/pkg/utils/config/config_test.go
@@ -261,7 +261,7 @@ func TestFunctionDefaultValue(t *testing.T) {
 }
 
 func TestOpensdsConfig(t *testing.T) {
-	CONF.Load("testdata/opensds.conf")
+	initConf("testdata/opensds.conf", CONF)
 
 	if CONF.OsdsApiServer.ApiEndpoint != "localhost:50040" {
 		t.Error("Test OsdsApiServer.ApiEndpoint error")
diff --git a/pkg/utils/config/flag.go b/pkg/utils/config/flag.go
deleted file mode 100755
index c4ac24c5e..000000000
--- a/pkg/utils/config/flag.go
+++ /dev/null
@@ -1,116 +0,0 @@
-// Copyright (c) 2017 Huawei Technologies Co., Ltd. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package config
-
-import (
-	gflag "flag"
-	"reflect"
-	"time"
-)
-
-type Flag struct {
-	InValue interface{}
-	Value   interface{}
-}
-
-type FlagSet struct {
-	flagMap map[string]*Flag
-}
-
-type Value interface {
-	Set(string) error
-}
-
-func (f *FlagSet) BoolVar(p *bool, name string, defValue bool, usage string) {
-	inVal := new(bool)
-	flag := &Flag{Value: p, InValue: inVal}
-	gflag.BoolVar(inVal, name, defValue, usage)
-	f.Add(name, flag)
-}
-
-func (f *FlagSet) IntVar(p *int, name string, defValue int, usage string) {
-	inVal := new(int)
-	flag := &Flag{Value: p, InValue: inVal}
-	gflag.IntVar(inVal, name, defValue, usage)
-	f.Add(name, flag)
-}
-
-func (f *FlagSet) Int64Var(p *int64, name string, defValue int64, usage string) {
-	inVal := new(int64)
-	flag := &Flag{Value: p, InValue: inVal}
-	gflag.Int64Var(inVal, name, defValue, usage)
-	f.Add(name, flag)
-}
-
-func (f *FlagSet) UintVar(p *uint, name string, defValue uint, usage string) {
-	inVal := new(uint)
-	flag := &Flag{Value: p, InValue: inVal}
-	gflag.UintVar(inVal, name, defValue, usage)
-	f.Add(name, flag)
-}
-
-func (f *FlagSet) Uint64Var(p *uint64, name string, defValue uint64, usage string) {
-	inVal := new(uint64)
-	flag := &Flag{Value: p, InValue: inVal}
-	gflag.Uint64Var(inVal, name, defValue, usage)
-	f.Add(name, flag)
-}
-
-func (f *FlagSet) Float64Var(p *float64, name string, defValue float64, usage string) {
-	inVal := new(float64)
-	flag := &Flag{Value: p, InValue: inVal}
-	gflag.Float64Var(inVal, name, defValue, usage)
-	f.Add(name, flag)
-}
-
-func (f *FlagSet) StringVar(p *string, name string, defValue string, usage string) {
-	inVal := new(string)
-	flag := &Flag{Value: p, InValue: inVal}
-	gflag.StringVar(inVal, name, defValue, usage)
-	f.Add(name, flag)
-}
-
-func (f *FlagSet) DurationVar(p *time.Duration, name string, defValue time.Duration, usage string) {
-	inVal := new(time.Duration)
-	flag := &Flag{Value: p, InValue: inVal}
-	gflag.DurationVar(inVal, name, defValue, usage)
-	f.Add(name, flag)
-}
-
-func (f *FlagSet) Add(name string, flag *Flag) {
-	if f.flagMap == nil {
-		f.flagMap = make(map[string]*Flag)
-	}
-	f.flagMap[name] = flag
-}
-
-func (f *FlagSet) Parse() {
-	gflag.Parse()
-}
-
-func (f *FlagSet) AssignValue() {
-	var actual []string
-	gflag.CommandLine.Visit(func(flag *gflag.Flag) {
-		actual = append(actual, flag.Name)
-	})
-	for _, name := range actual {
-		if _, ok := f.flagMap[name]; !ok {
-			continue
-		}
-		iv := reflect.ValueOf(f.flagMap[name].InValue).Elem()
-		v := reflect.ValueOf(f.flagMap[name].Value).Elem()
-		v.Set(iv)
-	}
-}
diff --git a/pkg/utils/config/flag_test.go b/pkg/utils/config/flag_test.go
deleted file mode 100755
index 72904c337..000000000
--- a/pkg/utils/config/flag_test.go
+++ /dev/null
@@ -1,97 +0,0 @@
-// Copyright (c) 2017 Huawei Technologies Co., Ltd. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package config
-
-import (
-	gflag "flag"
-	"fmt"
-	"os"
-	"testing"
-)
-
-func ResetForTesting(usage func()) {
-	gflag.CommandLine = gflag.NewFlagSet(os.Args[0], gflag.ContinueOnError)
-	gflag.CommandLine.Usage = func() {}
-	gflag.Usage = usage
-}
-
-func TestFlag(t *testing.T) {
-	f := FlagSet{}
-	var stringval string
-	var boolval bool
-	var intval int
-	var int64val int64
-	var uintval uint
-	var uint64val uint64
-	var flat64val float64
-	f.StringVar(&stringval, "StringVar", "DefualtString", "test")
-	f.BoolVar(&boolval, "BoolVar", false, "test")
-	f.IntVar(&intval, "IntVar", -321, "test")
-	f.Int64Var(&int64val, "Int64Var", -321, "test")
-	f.UintVar(&uintval, "UintVar", 321, "test")
-	f.Uint64Var(&uint64val, "Uint64Var", 321, "test")
-	f.Float64Var(&flat64val, "Float64Var", 0.321, "test")
-	cmd := []string{
-		"-StringVar", "HelloWorld",
-		"-BoolVar",
-		"-IntVar", "-123",
-		"-Int64Var", "-123",
-		"-UintVar", "123",
-		"-Uint64Var", "123",
-		"-Float64Var", "0.123",
-	}
-	err := gflag.CommandLine.Parse(cmd)
-	if err != nil {
-		t.Error(err)
-	}
-	f.AssignValue()
-	if stringval != "HelloWorld" {
-		t.Error("Test StringVar Failed!")
-	}
-	if boolval != true {
-		t.Error("Test BoolVar Failed!")
-	}
-	if intval != -123 {
-		t.Error("Test IntVar Failed!")
-	}
-	if int64val != -123 {
-		t.Error("Test Int64Var Failed!")
-	}
-	if uintval != 123 {
-		t.Error("Test UintVar Failed!")
-	}
-	if uint64val != 123 {
-		t.Error("Test Uint64Var Failed!")
-	}
-	if flat64val != 0.123 {
-		t.Error("Test Float64Var Failed!")
-	}
-}
-
-func TestDefaultValue(t *testing.T) {
-	ResetForTesting(func() { t.Fatal("bad parse") })
-	f := FlagSet{}
-	var stringval string
-	f.StringVar(&stringval, "StringVar", "DefualtString", "test")
-	err := gflag.CommandLine.Parse([]string{})
-	if err != nil {
-		t.Error(err)
-	}
-	f.AssignValue()
-	fmt.Println(stringval)
-	if stringval != "" {
-		t.Error("Test StringVar Failed!")
-	}
-}
diff --git a/pkg/utils/config/testdata/opensds.conf b/pkg/utils/config/testdata/opensds.conf
index 4b27eb21d..b9cd698b0 100755
--- a/pkg/utils/config/testdata/opensds.conf
+++ b/pkg/utils/config/testdata/opensds.conf
@@ -1,6 +1,5 @@
 [osdsapiserver]
 api_endpoint = localhost:50040
-log_file = /var/log/opensds/osdsapiserver.log
 log_flush_frequency = 2s
 auth_strategy = keystone
 # If https is enabled, the default value of cert file
@@ -14,12 +13,10 @@ password_decrypt_tool = aes
 
 [osdslet]
 api_endpoint = localhost:50049
-log_file = /var/log/opensds/osdslet.log
 log_flush_frequency = 3s
 
 [osdsdock]
 api_endpoint = localhost:50050
-log_file = /var/log/opensds/osdsdock.log
 # Choose the type of dock resource, only support 'provisioner' and 'attacher'.
 dock_type = provisioner
 # Specify which backends should be enabled, sample,ceph,cinder,lvm and so on.
diff --git a/pkg/utils/daemon/daemon.go b/pkg/utils/daemon/daemon.go
index e6b2cdbc5..79cbfbb04 100644
--- a/pkg/utils/daemon/daemon.go
+++ b/pkg/utils/daemon/daemon.go
@@ -20,16 +20,10 @@ import (
 	"os/exec"
 	"regexp"
 	"runtime"
-
-	"github.com/opensds/opensds/pkg/utils/config"
 )
 
 var execCmdHandler = execCmd
 
-func SetDaemonFlag(isDaemon *bool, defaultVal bool) {
-	config.CONF.Flag.BoolVar(isDaemon, "daemon", defaultVal, "run app as a daemon with -daemon=true")
-}
-
 func execCmd(name string, args ...string) {
 	cmd := exec.Command(name, args...)
 	if err := cmd.Start(); err != nil {
diff --git a/pkg/utils/daemon/daemon_test.go b/pkg/utils/daemon/daemon_test.go
index d01735e27..563532eb3 100644
--- a/pkg/utils/daemon/daemon_test.go
+++ b/pkg/utils/daemon/daemon_test.go
@@ -15,6 +15,7 @@
 package daemon
 
 import (
+	"flag"
 	"fmt"
 	"io/ioutil"
 	"os"
@@ -31,8 +32,7 @@ const testFile = "test.txt"
 
 func TestDaemon(t *testing.T) {
 	var godaemon bool
-
-	SetDaemonFlag(&godaemon, false)
+	flag.BoolVar(&godaemon, "daemon", false, "Run app as a daemon with -daemon=true")
 
 	execCmdHandler = mockCmdHandler
 
diff --git a/script/devsds/lib/opensds.sh b/script/devsds/lib/opensds.sh
index 191b7ae4d..961f7ae9a 100644
--- a/script/devsds/lib/opensds.sh
+++ b/script/devsds/lib/opensds.sh
@@ -25,7 +25,6 @@ osds:opensds:configuration(){
 cat >> $OPENSDS_CONFIG_DIR/opensds.conf << OPENSDS_GLOBAL_CONFIG_DOC
 [osdsapiserver]
 api_endpoint = 0.0.0.0:50040
-log_file = /var/log/opensds/osdsapiserver.log
 auth_strategy = $OPENSDS_AUTH_STRATEGY
 # If https is enabled, the default value of cert file
 # is /opt/opensds-security/opensds/opensds-cert.pem, 
@@ -36,11 +35,9 @@ beego_https_key_file =
 
 [osdslet]
 api_endpoint = $HOST_IP:50049
-log_file = /var/log/opensds/osdslet.log
 
 [osdsdock]
 api_endpoint = $HOST_IP:50050
-log_file = /var/log/opensds/osdsdock.log
 # Specify which backends should be enabled, sample,ceph,cinder,lvm and so on.
 enabled_backends = $OPENSDS_BACKEND_LIST
 
diff --git a/test/integration/prepare.sh b/test/integration/prepare.sh
index 705c0cbec..5d3da75e0 100755
--- a/test/integration/prepare.sh
+++ b/test/integration/prepare.sh
@@ -26,15 +26,12 @@ mkdir -p /etc/opensds
 cat > ${OPENSDS_CONF} << OPENSDS_GLOBAL_CONFIG_DOC
 [osdsapiserver]
 api_endpoint = 0.0.0.0:50040
-log_file = /var/log/opensds/osdsapiserver.log
 
 [osdslet]
 api_endpoint = 0.0.0.0:50049
-log_file = /var/log/opensds/osdslet.log
 
 [osdsdock]
 api_endpoint = 0.0.0.0:50050
-log_file = /var/log/opensds/osdsdock.log
 # Choose the type of dock resource, only support 'provisioner' and 'attacher'.
 dock_type = provisioner
 # Specify which backends should be enabled, sample,ceph,cinder,lvm and so on.