diff --git a/markbase-core/src/ssh_server/channel.rs b/markbase-core/src/ssh_server/channel.rs
index 00f89d0..62258ff 100644
--- a/markbase-core/src/ssh_server/channel.rs
+++ b/markbase-core/src/ssh_server/channel.rs
@@ -279,20 +279,21 @@ impl ChannelManager {
     fn handle_pty_request(&mut self, cursor: &mut std::io::Cursor<&[u8]>, channel: u32, want_reply: bool) -> Result<Option<SshPacket>> {
         info!("Handling pty request for channel {}", channel);
         
-        // 读取terminal类型
+        // 读取terminal类型（SSH string）
         let term = read_ssh_string(cursor)?;
         
-        // 读取窗口大小
+// 读取窗口大小（4个uint32）
         let width = cursor.read_u32::<BigEndian>()?;
         let height = cursor.read_u32::<BigEndian>()?;
-        let pixel_width = cursor.read_u32::<BigEndian>()?;
-        let pixel_height = cursor.read_u32::<BigEndian>()?;
+        let _pixel_width = cursor.read_u32::<BigEndian>()?;
+        let _pixel_height = cursor.read_u32::<BigEndian>()?;
         
-        // 读取terminal modes
+        // 读取terminal modes（SSH string格式）
         let modes_len = cursor.read_u32::<BigEndian>()?;
-        let modes = read_ssh_string(cursor)?;
+        let mut modes = vec![0u8; modes_len as usize];
+        cursor.read_exact(&mut modes)?;
         
-        info!("PTY: term={}, width={}, height={}", term, width, height);
+        info!("PTY: term={}, width={}, height={}, modes_len={}", term, width, height, modes_len);
         
         if want_reply {
             Ok(Some(self.build_channel_success(channel)?))