diff --git a/README.md b/README.md
index 47ae1c8397c2bf15dcc478650a577e4dc087faa5..50096a472446ae4976d9ef55cff939c0c41e30b6 100644
--- a/README.md
+++ b/README.md
@@ -1440,6 +1440,8 @@ And then debug it directly:
 
 The above command will use tmux to split into two terminals, each running QEMU and gdb respectively, and load the script from .gdb/kernel.default.
 
+To switch tmux panes, use CTRL+b followed by the arrow key (e.g., ←).
+
 To customize kernel gdbinit script, simply copy one and edit it manually:
 
     $ cp .gdb/kernel.default .gdb/kernel.user
@@ -1470,6 +1472,8 @@ To debug U-Boot with `.gdb/uboot.default`:
 
 The above command will use tmux to split into two terminals, each running QEMU and gdb respectively.
 
+To switch tmux panes, use CTRL+b followed by the arrow key (e.g., ←).
+
 To automate U-Boot debug testing:
 
     $ make test-debug uboot
diff --git a/README_zh.md b/README_zh.md
index db22e13d79a4cbc90427f097f51e93479c2010d3..b0102974f85c963e459d14adfaf2356043defed1 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -1690,6 +1690,8 @@ GCC 的版本可以分别在开发板特定的 Makefile 中针对 Linux, Uboot,
 
 该命令将使用 tmux 分割出两个终端分别运行 QEMU 和 gdb，并从 `.gdb/kernel.default` 加载脚本。
 
+可以使用 CTRL+b+方向键（例如←） 来切换 tmux 的窗格。
+
 如果想修改调试脚本，可以拷贝一份到 `.gdb/kernel.user`，这样就可以无缝升级：
 
     $ cp .gdb/kernel.default .gdb/kernel.user