diff --git a/apps/editor/src/__test__/unit/convertor.spec.ts b/apps/editor/src/__test__/unit/convertor.spec.ts
index 2ed8cdd3ef..6bd84dd137 100644
--- a/apps/editor/src/__test__/unit/convertor.spec.ts
+++ b/apps/editor/src/__test__/unit/convertor.spec.ts
@@ -595,20 +595,7 @@ describe('Convertor', () => {
         | ![altText](imgUrl) **mixed**<ul><li>[linkText](linkUrl) mixed</li></ul> |
       `;
 
-      const expected = source`
-        | thead |
-        | ----- |
-        | <ul><li>bullet</li></ul> |
-        | <ol><li>ordered</li></ol> |
-        | <ul><li>nested<ul><li>nested</li></ul></li></ul> |
-        | <ul><li>nested<ul><li>nested</li><li>nested</li></ul></li></ul> |
-        | <ol><li>mix<strong>ed</strong><ul><li><strong>mix</strong>ed</li></ul></li></ol> |
-        | <ol><li>mix<i>ed</i><ul><li><strong>mix</strong>ed</li></ul></li></ol> |
-        | foo<ul><li>bar</li></ul>baz |
-        | ![altText](imgUrl) **mixed**<ul><li>[linkText](linkUrl) mixed</li></ul> |
-      `;
-
-      assertConverting(markdown, `${expected}\n`);
+      assertConverting(markdown, `${markdown}\n`);
     });
 
     it('table with unmatched html list', () => {
@@ -1075,30 +1062,6 @@ describe('Convertor', () => {
     });
   });
 
-  it('should convert by using HTML tag when delimiter is not preceded an alphanumeric', () => {
-    const wwNodeJson = {
-      type: 'doc',
-      content: [
-        {
-          type: 'paragraph',
-          content: [
-            {
-              type: 'text',
-              marks: [{ type: 'strong' }],
-              text: '"test"',
-            },
-            { type: 'text', text: 'a' },
-          ],
-        },
-      ],
-    };
-    const wwNode = Node.fromJSON(schema, wwNodeJson);
-
-    const result = convertor.toMarkdownText(wwNode);
-
-    expect(result).toBe(`<strong>"test"</strong>a`);
-  });
-
   it('should convert empty line between lists of wysiwig to <br>', () => {
     const wwNodeJson = {
       type: 'doc',
diff --git a/apps/editor/src/convertors/toMarkdown/toMdConvertorState.ts b/apps/editor/src/convertors/toMarkdown/toMdConvertorState.ts
index 86fd701a05..9fe47a3567 100644
--- a/apps/editor/src/convertors/toMarkdown/toMdConvertorState.ts
+++ b/apps/editor/src/convertors/toMarkdown/toMdConvertorState.ts
@@ -1,6 +1,6 @@
 import { Node, Mark } from 'prosemirror-model';
 
-import { includes, escape, last, isEndWithSpace, isStartWithSpace } from '@/utils/common';
+import { includes, escape, last } from '@/utils/common';
 
 import { WwNodeType, WwMarkType } from '@t/wysiwyg';
 import {
@@ -10,7 +10,6 @@ import {
   FirstDelimFn,
   InfoForPosSync,
 } from '@t/convertor';
-import { DEFAULT_TEXT_NOT_START_OR_END_WITH_SPACE } from '@/utils/constants';
 
 export default class ToMdConvertorState {
   private readonly nodeTypeConvertors: ToMdNodeTypeConvertorMap;
@@ -50,27 +49,11 @@ export default class ToMdConvertorState {
     return /(^|\n)$/.test(this.result);
   }
 
-  private isBetweenSpaces(parent: Node, index: number) {
-    const { content } = parent;
-
-    const isFrontNodeEndWithSpace =
-      index === 0 ||
-      isEndWithSpace(content.child(index - 1).text ?? DEFAULT_TEXT_NOT_START_OR_END_WITH_SPACE);
-
-    const isRearNodeStartWithSpace =
-      index >= content.childCount - 1 ||
-      isStartWithSpace(content.child(index + 1).text ?? DEFAULT_TEXT_NOT_START_OR_END_WITH_SPACE);
-
-    return isFrontNodeEndWithSpace && isRearNodeStartWithSpace;
-  }
-
   private markText(mark: Mark, entering: boolean, parent: Node, index: number) {
     const convertor = this.getMarkConvertor(mark);
 
     if (convertor) {
-      const betweenSpace = this.isBetweenSpaces(parent, entering ? index : index - 1);
-
-      const { delim, rawHTML } = convertor({ node: mark, parent, index }, entering, betweenSpace);
+      const { delim, rawHTML } = convertor({ node: mark, parent, index }, entering);
 
       return (rawHTML as string) || (delim as string);
     }
diff --git a/apps/editor/src/convertors/toMarkdown/toMdConvertors.ts b/apps/editor/src/convertors/toMarkdown/toMdConvertors.ts
index 8f1a190404..71066e7b18 100644
--- a/apps/editor/src/convertors/toMarkdown/toMdConvertors.ts
+++ b/apps/editor/src/convertors/toMarkdown/toMdConvertors.ts
@@ -208,44 +208,29 @@ export const toMdConvertors: ToMdConvertorMap = {
     };
   },
 
-  strong({ node }, { entering }, betweenSpace) {
+  strong({ node }, { entering }) {
     const { rawHTML } = node.attrs;
-    let delim = '**';
-
-    if (!betweenSpace) {
-      delim = entering ? '<strong>' : '</strong>';
-    }
 
     return {
-      delim,
+      delim: '**',
       rawHTML: entering ? getOpenRawHTML(rawHTML) : getCloseRawHTML(rawHTML),
     };
   },
 
-  emph({ node }, { entering }, betweenSpace) {
+  emph({ node }, { entering }) {
     const { rawHTML } = node.attrs;
-    let delim = '*';
-
-    if (!betweenSpace) {
-      delim = entering ? '<em>' : '</em>';
-    }
 
     return {
-      delim,
+      delim: '*',
       rawHTML: entering ? getOpenRawHTML(rawHTML) : getCloseRawHTML(rawHTML),
     };
   },
 
-  strike({ node }, { entering }, betweenSpace) {
+  strike({ node }, { entering }) {
     const { rawHTML } = node.attrs;
-    let delim = '~~';
-
-    if (!betweenSpace) {
-      delim = entering ? '<del>' : '</del>';
-    }
 
     return {
-      delim,
+      delim: '~~',
       rawHTML: entering ? getOpenRawHTML(rawHTML) : getCloseRawHTML(rawHTML),
     };
   },
@@ -368,7 +353,7 @@ function createMarkTypeConvertors(convertors: ToMdConvertorMap) {
   const markTypes = Object.keys(markTypeOptions) as WwMarkType[];
 
   markTypes.forEach((type) => {
-    markTypeConvertors[type] = (nodeInfo, entering, betweenSpace) => {
+    markTypeConvertors[type] = (nodeInfo, entering) => {
       const markOption = markTypeOptions[type];
       const convertor = convertors[type];
 
@@ -377,9 +362,7 @@ function createMarkTypeConvertors(convertors: ToMdConvertorMap) {
       // When calling the converter without using `delim` and `rawHTML` values,
       // the converter is called without parameters.
       const runConvertor = convertor && nodeInfo && !isUndefined(entering);
-      const params = runConvertor
-        ? convertor!(nodeInfo as MarkInfo, { entering }, betweenSpace)
-        : {};
+      const params = runConvertor ? convertor!(nodeInfo as MarkInfo, { entering }) : {};
 
       return { ...params, ...markOption };
     };
diff --git a/apps/editor/src/utils/common.ts b/apps/editor/src/utils/common.ts
index 3754219237..642b012c19 100644
--- a/apps/editor/src/utils/common.ts
+++ b/apps/editor/src/utils/common.ts
@@ -263,15 +263,3 @@ export function assign(targetObj: Record<string, any>, obj: Record<string, any>
 export function getSortedNumPair(valueA: number, valueB: number) {
   return valueA > valueB ? [valueB, valueA] : [valueA, valueB];
 }
-
-export function isStartWithSpace(text: string) {
-  const reStartWithSpace = /^\s(\S*)/g;
-
-  return reStartWithSpace.test(text);
-}
-
-export function isEndWithSpace(text: string) {
-  const reEndWithSpace = /(\S*)\s$/g;
-
-  return reEndWithSpace.test(text);
-}
diff --git a/apps/editor/src/utils/constants.ts b/apps/editor/src/utils/constants.ts
index 78d5adf33f..2d6cd54983 100644
--- a/apps/editor/src/utils/constants.ts
+++ b/apps/editor/src/utils/constants.ts
@@ -20,5 +20,3 @@ export const reBR = /<br\s*\/*>/i;
 export const reHTMLComment = /<! ---->|<!--(?:-?[^>-])(?:-?[^-])*-->/;
 
 export const ALTERNATIVE_TAG_FOR_BR = '</p><p>';
-
-export const DEFAULT_TEXT_NOT_START_OR_END_WITH_SPACE = 'a';
diff --git a/apps/editor/types/convertor.d.ts b/apps/editor/types/convertor.d.ts
index 718c1c7ade..2ab9c93933 100644
--- a/apps/editor/types/convertor.d.ts
+++ b/apps/editor/types/convertor.d.ts
@@ -113,8 +113,7 @@ export type ToMdNodeTypeConvertorMap = Partial<Record<WwNodeType, ToMdNodeTypeCo
 
 type ToMdMarkTypeConvertor = (
   nodeInfo?: MarkInfo,
-  entering?: boolean,
-  betweenSpace?: boolean
+  entering?: boolean
 ) => ToMdConvertorReturnValues & ToMdMarkTypeOption;
 
 export type ToMdMarkTypeConvertorMap = Partial<Record<WwMarkType, ToMdMarkTypeConvertor>>;
@@ -127,8 +126,7 @@ interface ToMdConvertorContext {
 
 type ToMdConvertor = (
   nodeInfo: NodeInfo | MarkInfo,
-  context: ToMdConvertorContext,
-  betweenSpace?: boolean
+  context: ToMdConvertorContext
 ) => ToMdConvertorReturnValues;
 
 export type ToMdConvertorMap = Partial<Record<WwNodeType | MdNodeType, ToMdConvertor>>;