diff --git a/.changeset/remove-duplicate-newline-handling.md b/.changeset/remove-duplicate-newline-handling.md
new file mode 100644
index 0000000000..c2ef603df8
--- /dev/null
+++ b/.changeset/remove-duplicate-newline-handling.md
@@ -0,0 +1,5 @@
+---
+"@moonshot-ai/kimi-code": patch
+---
+
+Remove duplicate newline-shortcut handling from the prompt editor.
diff --git a/apps/kimi-code/src/tui/components/editor/custom-editor.ts b/apps/kimi-code/src/tui/components/editor/custom-editor.ts
index 1fb28a0060..4616936928 100644
--- a/apps/kimi-code/src/tui/components/editor/custom-editor.ts
+++ b/apps/kimi-code/src/tui/components/editor/custom-editor.ts
@@ -114,12 +114,6 @@ function stripSgr(s: string): string {
   return s.replace(ANSI_SGR, '');
 }
 
-function getNewlineInput(data: string): string | undefined {
-  if (data === '\n' || data === '\u001B\r' || data === '\u001B[13;2~') return data;
-  if (matchesKey(data, Key.ctrl('j'))) return '\n';
-  return undefined;
-}
-
 export class CustomEditor extends Editor {
   public onEscape?: () => void;
   /**
@@ -137,7 +131,6 @@ export class CustomEditor extends Editor {
   /** Return `true` to consume Ctrl+T (the todo list had overflow to toggle); return `false`/`undefined` to fall through to the editor default. */
   public onToggleTodoExpand?: () => boolean;
   public onUndo?: () => void;
-  public onInsertNewline?: () => void;
   public onTextPaste?: () => void;
   /**
    * Called when ↑ is pressed in an empty editor. Return `true` to consume
@@ -436,13 +429,6 @@ export class CustomEditor extends Editor {
       return;
     }
 
-    const newlineInput = getNewlineInput(normalized);
-    if (newlineInput !== undefined) {
-      this.onInsertNewline?.();
-      super.handleInput(newlineInput);
-      return;
-    }
-
     if (matchesKey(normalized, Key.up)) {
       if (this.getText().length === 0 && this.onUpArrowEmpty) {
         if (this.onUpArrowEmpty()) return;
diff --git a/apps/kimi-code/src/tui/controllers/editor-keyboard.ts b/apps/kimi-code/src/tui/controllers/editor-keyboard.ts
index cad02c6554..af2d8efd61 100644
--- a/apps/kimi-code/src/tui/controllers/editor-keyboard.ts
+++ b/apps/kimi-code/src/tui/controllers/editor-keyboard.ts
@@ -281,10 +281,6 @@ export class EditorKeyboardController {
       host.track('undo');
     };
 
-    editor.onInsertNewline = () => {
-      host.track('shortcut_newline');
-    };
-
     editor.onTextPaste = () => {
       host.track('shortcut_paste', { kind: 'text' });
     };
diff --git a/apps/kimi-code/test/tui/components/editor/custom-editor.test.ts b/apps/kimi-code/test/tui/components/editor/custom-editor.test.ts
index 6ef871208e..1384dfc0bd 100644
--- a/apps/kimi-code/test/tui/components/editor/custom-editor.test.ts
+++ b/apps/kimi-code/test/tui/components/editor/custom-editor.test.ts
@@ -586,19 +586,6 @@ describe('CustomEditor paste marker expansion', () => {
 });
 
 describe('CustomEditor shortcut telemetry hooks', () => {
-  it('reports newline shortcuts, including Ctrl-J, before delegating to the base editor', () => {
-    const editor = makeEditor();
-    const onInsertNewline = vi.fn();
-    editor.onInsertNewline = onInsertNewline;
-
-    editor.handleInput('a');
-    editor.handleInput('\n');
-    editor.handleInput('\u001B[106;5u');
-
-    expect(onInsertNewline).toHaveBeenCalledTimes(2);
-    expect(editor.getText()).toBe('a\n\n');
-  });
-
   it('reports undo shortcuts before delegating to the base editor', () => {
     const editor = makeEditor();
     const onUndo = vi.fn();
diff --git a/apps/kimi-code/test/tui/kimi-tui-message-flow.test.ts b/apps/kimi-code/test/tui/kimi-tui-message-flow.test.ts
index 550122428a..bceeea6172 100644
--- a/apps/kimi-code/test/tui/kimi-tui-message-flow.test.ts
+++ b/apps/kimi-code/test/tui/kimi-tui-message-flow.test.ts
@@ -400,7 +400,6 @@ describe('KimiTUI message flow', () => {
     const { driver, harness } = await makeDriver();
     harness.track.mockClear();
 
-    driver.state.editor.handleInput('\u001B[106;5u');
     driver.state.editor.handleInput('\u001F');
     delete process.env['VISUAL'];
     delete process.env['EDITOR'];
@@ -408,7 +407,6 @@ describe('KimiTUI message flow', () => {
     driver.state.editor.onToggleToolExpand?.();
     driver.state.editor.onTextPaste?.();
 
-    expect(harness.track).toHaveBeenCalledWith('shortcut_newline', undefined);
     expect(harness.track).toHaveBeenCalledWith('undo', undefined);
     expect(harness.track).toHaveBeenCalledWith('shortcut_editor', undefined);
     expect(harness.track).toHaveBeenCalledWith('shortcut_expand', undefined);