diff --git a/apps/ai-game-creator-shell/src/components/ChatMarkdownMessage/index.tsx b/apps/ai-game-creator-shell/src/components/ChatMarkdownMessage/index.tsx
index f3efd6236..39926feee 100644
--- a/apps/ai-game-creator-shell/src/components/ChatMarkdownMessage/index.tsx
+++ b/apps/ai-game-creator-shell/src/components/ChatMarkdownMessage/index.tsx
@@ -45,18 +45,22 @@ class MarkdownErrorBoundary extends Component<
 }
 
 const ListDepthContext = createContext(0);
+const ListKindContext = createContext<'unordered' | 'ordered' | null>(null);
+const ListItemContext = createContext(false);
 
 function MarkdownUnorderedList({ children }: { children?: ReactNode }) {
   const depth = useContext(ListDepthContext);
   return (
     <ListDepthContext.Provider value={depth + 1}>
-      <ul
-        className={`m-0 mt-2 list-none space-y-1 first:mt-0 ${
-          depth > 0 ? 'pl-4' : 'pl-0'
-        }`}
-      >
-        {children}
-      </ul>
+      <ListKindContext.Provider value="unordered">
+        <ul
+          className={`m-0 mt-2 list-none space-y-1 first:mt-0 ${
+            depth > 0 ? 'pl-4' : 'pl-0'
+          }`}
+        >
+          {children}
+        </ul>
+      </ListKindContext.Provider>
     </ListDepthContext.Provider>
   );
 }
@@ -65,13 +69,38 @@ function MarkdownOrderedList({ children }: { children?: ReactNode }) {
   const depth = useContext(ListDepthContext);
   return (
     <ListDepthContext.Provider value={depth + 1}>
-      <ol className="m-0 mt-2 list-decimal space-y-1 pl-5 first:mt-0">
-        {children}
-      </ol>
+      <ListKindContext.Provider value="ordered">
+        <ol className="m-0 mt-2 list-decimal space-y-1 pl-5 first:mt-0">
+          {children}
+        </ol>
+      </ListKindContext.Provider>
     </ListDepthContext.Provider>
   );
 }
 
+function MarkdownParagraph({ children }: { children?: ReactNode }) {
+  const inListItem = useContext(ListItemContext);
+  return (
+    <p
+      className={`m-0 break-words ${inListItem ? 'inline' : 'mt-2 first:mt-0'}`}
+    >
+      {children}
+    </p>
+  );
+}
+
+function MarkdownListItem({ children }: { children?: ReactNode }) {
+  const listKind = useContext(ListKindContext);
+  return (
+    <ListItemContext.Provider value>
+      <li className="break-words">
+        {listKind === 'unordered' ? '- ' : null}
+        {children}
+      </li>
+    </ListItemContext.Provider>
+  );
+}
+
 const markdownComponents: Components = {
   // TODO: 产品确认安全外链策略后，再将链接文本恢复为可点击元素。
   a: ({ children }) => children,
@@ -85,12 +114,10 @@ const markdownComponents: Components = {
   h3: ({ children }) => (
     <h3 className="m-0 mt-3 text-base font-semibold first:mt-0">{children}</h3>
   ),
-  p: ({ children }) => (
-    <p className="m-0 mt-2 break-words first:mt-0">{children}</p>
-  ),
+  p: MarkdownParagraph,
   ul: MarkdownUnorderedList,
   ol: MarkdownOrderedList,
-  li: ({ children }) => <li className="break-words">- {children}</li>,
+  li: MarkdownListItem,
   blockquote: ({ children }) => (
     <blockquote className="m-0 mt-2 border-l-2 border-(--platform-surface-border) pl-3 text-(--platform-text-soft) first:mt-0">
       {children}
diff --git a/apps/ai-game-creator-shell/tests/ChatMarkdownMessage.test.tsx b/apps/ai-game-creator-shell/tests/ChatMarkdownMessage.test.tsx
index f3778c4ab..43f4a9bde 100644
--- a/apps/ai-game-creator-shell/tests/ChatMarkdownMessage.test.tsx
+++ b/apps/ai-game-creator-shell/tests/ChatMarkdownMessage.test.tsx
@@ -38,6 +38,21 @@ describe('ChatMarkdownMessage', () => {
     expect(lists[2]?.className).toContain('pl-4');
   });
 
+  it('有序列表不添加无序列表短横线，列表项段落与文本同行', () => {
+    const { container } = render(
+      <ChatMarkdownMessage
+        role="assistant"
+        text={'1. 第一件事\n\n2. 第二件事\n\n   1. 子步骤 2.1'}
+      />,
+    );
+
+    const items = container.querySelectorAll('ol > li');
+    expect(items[0]?.textContent?.trim()).toBe('第一件事');
+    expect(items[1]?.textContent?.trim()).toContain('第二件事');
+    expect(items[0]?.querySelector('p')?.className ?? '').toContain('inline');
+    expect(items[0]?.textContent).not.toContain('-');
+  });
+
   it('不会把 react-markdown 的 node 元数据泄漏到代码节点', () => {
     const { container } = render(
       <ChatMarkdownMessage