diff --git a/ch2/user/src/bin/00hello_world.rs b/ch2/user/src/bin/00hello_world.rs
index 77ef2fc..fbf31f5 100644
--- a/ch2/user/src/bin/00hello_world.rs
+++ b/ch2/user/src/bin/00hello_world.rs
@@ -1,6 +1,7 @@
 #![no_std]
 #![no_main]
 
+use user_lib;
 
 #[no_mangle]
 fn main() {
diff --git a/ch2/user/src/lib.rs b/ch2/user/src/lib.rs
index 04ead1b..7c21dcb 100644
--- a/ch2/user/src/lib.rs
+++ b/ch2/user/src/lib.rs
@@ -1,5 +1,8 @@
 #![no_std]
 #![feature(linkage)]  // 开启弱链接特性
+#![feature(panic_info_message)]
+
+mod user_lang_items;
 
 #[linkage = "weak"]  // 设置我们默认的main函数, 弱链接
 #[no_mangle]
diff --git a/ch2/user/src/user_lang_items.rs b/ch2/user/src/user_lang_items.rs
new file mode 100644
index 0000000..59f155e
--- /dev/null
+++ b/ch2/user/src/user_lang_items.rs
@@ -0,0 +1 @@
+pub mod user_panic;
diff --git a/ch2/user/src/user_lang_items/user_panic.rs b/ch2/user/src/user_lang_items/user_panic.rs
new file mode 100644
index 0000000..0fd119e
--- /dev/null
+++ b/ch2/user/src/user_lang_items/user_panic.rs
@@ -0,0 +1,18 @@
+use core::panic::PanicInfo;
+
+#[panic_handler]
+fn panic(info: &PanicInfo) -> ! {
+    if let Some(location) = info.location() {
+        // println!(
+        //     "Panicked at {}:{} {}",
+        //     location.file(),
+        //     location.line(),
+        //     info.message().unwrap()
+        // );
+    } else {
+        // println!("Panicked: {}", info.message().unwrap());
+    }
+    loop {
+
+    }
+}
\ No newline at end of file