diff --git a/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/mobile/MobHelpProcessor.java b/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/mobile/MobHelpProcessor.java
index 034928ca..8dbee73a 100644
--- a/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/mobile/MobHelpProcessor.java
+++ b/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/mobile/MobHelpProcessor.java
@@ -41,7 +41,7 @@ public void handle(ProcessContext context) {
 		// list telecom nb-iot devices
 		sb.append(ColorUtils.cyanAnnotation("list:    " + bundle.getString("nb.operation.list.desc")))
 				.append(StringUtils.lineSeparator());
-		sb.append("    usage: list pageNo searchValue").append(StringUtils.lineSeparator());
+		sb.append("    usage: list searchValue pageNo").append(StringUtils.lineSeparator());
 		sb.append(StringUtils.lineSeparator());
 
 		// get telecom nb-iot device detail info
diff --git a/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/mobile/MobListDeviceProcessor.java b/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/mobile/MobListDeviceProcessor.java
index 8fb0a73d..99681fa8 100644
--- a/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/mobile/MobListDeviceProcessor.java
+++ b/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/mobile/MobListDeviceProcessor.java
@@ -20,6 +20,7 @@
 import com.github.freva.asciitable.HorizontalAlign;
 import com.github.freva.asciitable.OverflowBehaviour;
 import iot.technology.client.toolkit.common.rule.ProcessContext;
+import iot.technology.client.toolkit.common.rule.TkAbstractProcessor;
 import iot.technology.client.toolkit.common.rule.TkProcessor;
 import iot.technology.client.toolkit.common.utils.ColorUtils;
 import iot.technology.client.toolkit.nb.service.mobile.MobileDeviceService;
@@ -33,9 +34,18 @@
 import java.util.List;
 
 /**
+ * usage:
+ * <p>
+ * 1、list: print first page device list
+ * <p>
+ * 2、list pageNo: print pageNo device list
+ * <p>
+ * 3、list searchValue pageNo: print searchValue pageNo device list
+ * <p>
+ *
  * @author mushuwei
  */
-public class MobListDeviceProcessor implements TkProcessor {
+public class MobListDeviceProcessor extends TkAbstractProcessor implements TkProcessor {
 
 	private final MobileDeviceService mobileDeviceService = new MobileDeviceService();
 
@@ -47,15 +57,29 @@ public boolean supports(ProcessContext context) {
 	@Override
 	public void handle(ProcessContext context) {
 		List<String> arguArgs = List.of(context.getData().split(" "));
-		if (arguArgs.size() > 3 || arguArgs.size() < 2) {
+		if (arguArgs.size() > 3) {
 			System.out.format(ColorUtils.blackBold("argument:%s is illegal"), context.getData());
 			System.out.format(" " + "%n");
 			return;
 		}
+		Integer pageNo = 1;
 		String searchValue = null;
-		Integer pageNo = Integer.valueOf(arguArgs.get(1));
-		if (arguArgs.size() > 2) {
-			searchValue = arguArgs.get(2);
+		if (arguArgs.size() == 1) {
+		}
+		if (arguArgs.size() == 2) {
+			String pageNoStr = arguArgs.get(1);
+			if (!validateLimit(pageNoStr)) {
+				return;
+			}
+			pageNo = Integer.parseInt(pageNoStr);
+		}
+		if (arguArgs.size() == 3) {
+			searchValue = arguArgs.get(1);
+			String pageNoStr = arguArgs.get(2);
+			if (!validateLimit(pageNoStr)) {
+				return;
+			}
+			pageNo = Integer.parseInt(pageNoStr);
 		}
 		MobProcessContext mobProcessContext = (MobProcessContext) context;
 		MobileConfigDomain mobileConfigDomain = mobProcessContext.getMobileConfigDomain();
diff --git a/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/telecom/TelHelpProcessor.java b/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/telecom/TelHelpProcessor.java
index 1e0cab0d..c705ed17 100644
--- a/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/telecom/TelHelpProcessor.java
+++ b/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/telecom/TelHelpProcessor.java
@@ -41,7 +41,7 @@ public void handle(ProcessContext context) {
 		// list telecom nb-iot devices
 		sb.append(ColorUtils.cyanAnnotation("list:    " + bundle.getString("nb.operation.list.desc")))
 				.append(StringUtils.lineSeparator());
-		sb.append("    usage: list pageNo searchValue").append(StringUtils.lineSeparator());
+		sb.append("    usage: list searchValue pageNo").append(StringUtils.lineSeparator());
 		sb.append(StringUtils.lineSeparator());
 
 		// get telecom nb-iot device detail info
diff --git a/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/telecom/TelListDeviceProcessor.java b/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/telecom/TelListDeviceProcessor.java
index 6d065e34..40c7c726 100644
--- a/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/telecom/TelListDeviceProcessor.java
+++ b/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/processor/telecom/TelListDeviceProcessor.java
@@ -36,11 +36,14 @@
 import java.util.List;
 
 /**
- * 1、list
+ * usage:
  * <p>
- * 2、list 1
+ * 1、list: print first page device list
+ * <p>
+ * 2、list pageNo: print pageNo device list
+ * <p>
+ * 3、list searchValue pageNo: print searchValue pageNo device list
  * <p>
- * 3、list searchValue 1
  *
  * @author mushuwei
  */
diff --git a/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/telecom/domain/action/device/TelQueryDeviceByImeiResponse.java b/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/telecom/domain/action/device/TelQueryDeviceByImeiResponse.java
index 46a7b950..de828e4d 100644
--- a/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/telecom/domain/action/device/TelQueryDeviceByImeiResponse.java
+++ b/toolkit-nbiot/src/main/java/iot/technology/client/toolkit/nb/service/telecom/domain/action/device/TelQueryDeviceByImeiResponse.java
@@ -33,23 +33,29 @@ public class TelQueryDeviceByImeiResponse extends BaseTelResponse {
 	private TelQueryDeviceByImeiBody result;
 
 	public void printToConsole() {
-		System.out.format("deviceId: " + ColorUtils.blackBold(result.getDeviceId()) + "%n");
-		System.out.format("deviceName: " + ColorUtils.blackBold(result.getDeviceName()) + "%n");
-		System.out.format("productId: " + ColorUtils.blackBold(String.valueOf(result.getProductId())) + "%n");
-		System.out.format("imei: " + ColorUtils.blackBold(result.getImei()) + "%n");
-		System.out.format("deviceStatus: " + ColorUtils.blackBold(TelDeviceStatusEnum.type(result.getDeviceStatus())) + "%n");
-		System.out.format(
-				"imsi: " + (Objects.nonNull(result.getImsi()) ? ColorUtils.blackBold(String.valueOf(result.getImsi())) : "") + "%n");
-		System.out.format("firmwareVersion: " +
-				(Objects.nonNull(result.getFirmwareVersion()) ? ColorUtils.blackBold(result.getFirmwareVersion()) : "") + "%n");
-		System.out.format("autoObserver: " + ColorUtils.blackBold(TelAutoObserverEnum.type(result.getAutoObserver())) + "%n");
-		System.out.format("netStatus: " + ColorUtils.blackBold(TelNetStatusEnum.type(result.getNetStatus())) + "%n");
-		System.out.format("onlineAt: " +
-				(Objects.nonNull(result.getOnlineAt()) ? ColorUtils.blackBold(DateUtils.timestampToFormatterTime(result.getOnlineAt())) :
-						"") + "%n");
-		System.out.format("offlineAt: " +
-				(Objects.nonNull(result.getOfflineAt()) ? ColorUtils.blackBold(DateUtils.timestampToFormatterTime(result.getOfflineAt())) :
-						"") + "%n");
+		if (Objects.nonNull(result)) {
+			System.out.format("deviceId: " + ColorUtils.blackBold(result.getDeviceId()) + "%n");
+			System.out.format("deviceName: " + ColorUtils.blackBold(result.getDeviceName()) + "%n");
+			System.out.format("productId: " + ColorUtils.blackBold(String.valueOf(result.getProductId())) + "%n");
+			System.out.format("imei: " + ColorUtils.blackBold(result.getImei()) + "%n");
+			System.out.format("deviceStatus: " + ColorUtils.blackBold(TelDeviceStatusEnum.type(result.getDeviceStatus())) + "%n");
+			System.out.format(
+					"imsi: " + (Objects.nonNull(result.getImsi()) ? ColorUtils.blackBold(String.valueOf(result.getImsi())) : "") + "%n");
+			System.out.format("firmwareVersion: " +
+					(Objects.nonNull(result.getFirmwareVersion()) ? ColorUtils.blackBold(result.getFirmwareVersion()) : "") + "%n");
+			System.out.format("autoObserver: " + ColorUtils.blackBold(TelAutoObserverEnum.type(result.getAutoObserver())) + "%n");
+			System.out.format("netStatus: " + ColorUtils.blackBold(TelNetStatusEnum.type(result.getNetStatus())) + "%n");
+			System.out.format("onlineAt: " +
+					(Objects.nonNull(result.getOnlineAt()) ? ColorUtils.blackBold(DateUtils.timestampToFormatterTime(result.getOnlineAt())) :
+							"") + "%n");
+			System.out.format("offlineAt: " +
+					(Objects.nonNull(result.getOfflineAt()) ? ColorUtils.blackBold(DateUtils.timestampToFormatterTime(result.getOfflineAt())) :
+							"") + "%n");
+		} else {
+			System.out.println("this product does not have this imei!");
+		}
+
+
 	}
 
 	public TelQueryDeviceByImeiBody getResult() {