diff --git a/include/kernel/tty.h b/include/kernel/tty.h
index 6079eeb..1a8395d 100644
--- a/include/kernel/tty.h
+++ b/include/kernel/tty.h
@@ -12,7 +12,7 @@ typedef enum __tty_type
     // 用于图形功能初始化后，直接连接图形接口
     tty_type_display = 2,
     // 用于图形终端的终端模拟器
-    tty_type_vtty = 3,
+    tty_type_vterm = 3,
 } tty_type;
 
 typedef enum __framebuffer_pixel_type
@@ -58,6 +58,7 @@ typedef struct __tty
     tty_type type;
     tty_typeinfo typeinfo;
     tty_mode mode;
+    bool enabled;
     tty_text_state text;
 } tty;
 
@@ -67,6 +68,7 @@ typedef struct __tty_controller_t
 #define TTY_MAX_NUM 128
     tty *ttys[TTY_MAX_NUM];
     bool map[TTY_MAX_NUM];
+    tty *enabled[TTY_MAX_NUM];
 } tty_controller_t;
 
 /**
@@ -118,6 +120,19 @@ void tty_text_print(tty *ttyx, char *string, u32 color, u32 bgcolor);
 
 #define gen_color(r, g, b) (((r) << 16) | ((g) << 8) | (b))
 
+/**
+ * @brief 打开某个tty
+ * 
+ * @param ttyx 
+ * @return true 打开成功
+ * @return false 已经打开
+ *  或作为raw_framebuffer类型的tty，framebuffer已被其它raw_framebuffer
+ *  类型的tty占用
+ */
+bool tty_enable(tty *ttyx);
+
+void tty_disable(tty *ttyx);
+
 #define TTY_FONT_SCALE 2
 
 typedef struct __tty_font_t
diff --git a/src/kernel/main.rs b/src/kernel/main.rs
index 099a7ee..cf8c6e4 100644
--- a/src/kernel/main.rs
+++ b/src/kernel/main.rs
@@ -1,12 +1,9 @@
-use std::panic;
-
 use crate::kernel::tty::tty::{Color, MessageBuilder, Tty};
 
 #[no_mangle]
 extern "C" fn kmain_rust() {
     let tty = Tty::from_id(0).unwrap();
-    // let ttyptr = unsafe { tty.get_c_tty_t() };
-
+    tty.enable();
     let hello = MessageBuilder::new()
         .message("Hello, ".to_string())
         .message("Metaverse".to_string())
diff --git a/src/kernel/tty/tty.c b/src/kernel/tty/tty.c
index b7c5b36..a2af9b2 100644
--- a/src/kernel/tty/tty.c
+++ b/src/kernel/tty/tty.c
@@ -11,26 +11,27 @@ tty_controller_t *tty_controller_new()
 {
     memset(tty_ctrler.ttys, 0, sizeof(tty_ctrler.ttys));
     memset(tty_ctrler.map, 0, sizeof(tty_ctrler.map));
+    memset(tty_ctrler.enabled, 0, sizeof(tty_ctrler.enabled));
     return &tty_ctrler;
 }
 
 tty *tty_new(tty_type type, tty_mode mode)
 {
-    tty *__tty = memm_allocate(sizeof(tty), 0);
-    memset(__tty, 0, sizeof(tty));
-    __tty->type = type;
-    __tty->mode = mode;
     tty *res = nullptr;
     for (usize i = 0; i < TTY_MAX_NUM; ++i)
     {
         if (tty_ctrler.map[i] == false)
         {
-            res = __tty;
-            __tty->id = i;
-            tty_ctrler.ttys[i] = __tty;
+            res = memm_kernel_allocate(sizeof(tty));
+            res->id = i;
+            tty_ctrler.ttys[i] = res;
             tty_ctrler.map[i] = true;
+            break;
         }
     }
+    res->type = type;
+    res->mode = mode;
+    res->enabled = false;
     return res;
 }
 
@@ -55,6 +56,8 @@ void tty_set_framebuffer(tty *ttyx, framebuffer *fb)
     {
         ttyx->text.width = fb->width / tty_get_font()->char_width;
         ttyx->text.height = fb->height / tty_get_font()->char_height;
+        ttyx->text.line = 0;
+        ttyx->text.column = 0;
     }
 }
 
@@ -87,12 +90,13 @@ inline static void putchar(
                 {
                     for (usize b = 0; b < TTY_FONT_SCALE; ++b)
                     {
-                        put_pixel(ttyx->typeinfo.raw_framebuffer.pointer,
-                                  ttyx->typeinfo.raw_framebuffer.width,
-                                  ttyx->typeinfo.raw_framebuffer.pixsize,
-                                  ttyx->text.column * font->char_width * TTY_FONT_SCALE + i * TTY_FONT_SCALE + a,
-                                  ttyx->text.line * font->char_height * TTY_FONT_SCALE + j * TTY_FONT_SCALE + b,
-                                  color);
+                        put_pixel(
+                            ttyx->typeinfo.raw_framebuffer.pointer,
+                            ttyx->typeinfo.raw_framebuffer.width,
+                            ttyx->typeinfo.raw_framebuffer.pixsize,
+                            ttyx->text.column * font->char_width * TTY_FONT_SCALE + i * TTY_FONT_SCALE + a,
+                            ttyx->text.line * font->char_height * TTY_FONT_SCALE + j * TTY_FONT_SCALE + b,
+                            color);
                     }
                 }
             }
@@ -102,12 +106,13 @@ inline static void putchar(
                 {
                     for (usize b = 0; b < TTY_FONT_SCALE; ++b)
                     {
-                        put_pixel(ttyx->typeinfo.raw_framebuffer.pointer,
-                                  ttyx->typeinfo.raw_framebuffer.width,
-                                  ttyx->typeinfo.raw_framebuffer.pixsize,
-                                  ttyx->text.column * font->char_width * TTY_FONT_SCALE + i * TTY_FONT_SCALE + a,
-                                  ttyx->text.line * font->char_height * TTY_FONT_SCALE + j * TTY_FONT_SCALE + b,
-                                  bgcolor);
+                        put_pixel(
+                            ttyx->typeinfo.raw_framebuffer.pointer,
+                            ttyx->typeinfo.raw_framebuffer.width,
+                            ttyx->typeinfo.raw_framebuffer.pixsize,
+                            ttyx->text.column * font->char_width * TTY_FONT_SCALE + i * TTY_FONT_SCALE + a,
+                            ttyx->text.line * font->char_height * TTY_FONT_SCALE + j * TTY_FONT_SCALE + b,
+                            bgcolor);
                     }
                 }
             }
@@ -121,17 +126,20 @@ inline static void newline(tty *ttyx)
     ttyx->text.line++;
     if (ttyx->text.line == ttyx->text.height)
     {
-        scroll_buffer(ttyx->typeinfo.raw_framebuffer.pointer,
-                      ttyx->typeinfo.raw_framebuffer.width,
-                      ttyx->typeinfo.raw_framebuffer.height,
-                      ttyx->typeinfo.raw_framebuffer.pixsize,
-                      tty_get_font()->char_height * TTY_FONT_SCALE);
+        scroll_buffer(
+            ttyx->typeinfo.raw_framebuffer.pointer,
+            ttyx->typeinfo.raw_framebuffer.width,
+            ttyx->typeinfo.raw_framebuffer.height,
+            ttyx->typeinfo.raw_framebuffer.pixsize,
+            tty_get_font()->char_height * TTY_FONT_SCALE);
         ttyx->text.line--;
     }
 }
 
 void tty_text_print(tty *ttyx, char *string, u32 color, u32 bgcolor)
 {
+    if (ttyx->enabled == false)
+        return;
     if (ttyx->mode != tty_mode_text)
         return;
     if (ttyx->typeinfo.raw_framebuffer.pixtype == bgr)
@@ -147,8 +155,8 @@ void tty_text_print(tty *ttyx, char *string, u32 color, u32 bgcolor)
         }
     }
     tty_font_t *font = tty_get_font();
-    simple_lock_lock(ttyx->text.lock);
     usize len = strlen(string);
+    simple_lock_lock(ttyx->text.lock);
     for (char *str = string; string - str < len; string++)
     {
         char c = *string;
@@ -173,11 +181,12 @@ void tty_text_print(tty *ttyx, char *string, u32 color, u32 bgcolor)
             ttyx->text.line++;
             if (ttyx->text.line == ttyx->text.height)
             {
-                scroll_buffer(ttyx->typeinfo.raw_framebuffer.pointer,
-                              ttyx->typeinfo.raw_framebuffer.width,
-                              ttyx->typeinfo.raw_framebuffer.height,
-                              ttyx->typeinfo.raw_framebuffer.pixsize,
-                              font->char_height * TTY_FONT_SCALE);
+                scroll_buffer(
+                    ttyx->typeinfo.raw_framebuffer.pointer,
+                    ttyx->typeinfo.raw_framebuffer.width,
+                    ttyx->typeinfo.raw_framebuffer.height,
+                    ttyx->typeinfo.raw_framebuffer.pixsize,
+                    font->char_height * TTY_FONT_SCALE);
                 ttyx->text.line--;
             }
             continue;
@@ -192,11 +201,12 @@ void tty_text_print(tty *ttyx, char *string, u32 color, u32 bgcolor)
         }
         else if (c == '\f')
         { // 滚动一行
-            scroll_buffer(ttyx->typeinfo.raw_framebuffer.pointer,
-                          ttyx->typeinfo.raw_framebuffer.width,
-                          ttyx->typeinfo.raw_framebuffer.height,
-                          ttyx->typeinfo.raw_framebuffer.pixsize,
-                          font->char_height * TTY_FONT_SCALE);
+            scroll_buffer(
+                ttyx->typeinfo.raw_framebuffer.pointer,
+                ttyx->typeinfo.raw_framebuffer.width,
+                ttyx->typeinfo.raw_framebuffer.height,
+                ttyx->typeinfo.raw_framebuffer.pixsize,
+                font->char_height * TTY_FONT_SCALE);
             continue;
         }
         // 打印字符c
@@ -213,3 +223,29 @@ void tty_text_print(tty *ttyx, char *string, u32 color, u32 bgcolor)
     putchar(ttyx, '\0', gen_color(0x88, 0x88, 0x88), 0);
     simple_lock_unlock(ttyx->text.lock);
 }
+
+bool tty_enable(tty *ttyx)
+{
+    if (tty_ctrler.enabled[ttyx->id])
+        return false;
+    if (ttyx->type == tty_type_raw_framebuffer)
+    {
+        for (usize i = 0; i < TTY_MAX_NUM; ++i)
+        {
+            if (ttyx->id != i &&
+                tty_ctrler.enabled[i] != nullptr &&
+                tty_ctrler.ttys[i]->type == tty_type_raw_framebuffer)
+                return false;
+        }
+    }
+
+    ttyx->enabled = true;
+    tty_ctrler.enabled[ttyx->id] = ttyx;
+    return true;
+}
+
+void tty_disable(tty *ttyx)
+{
+    ttyx->enabled = false;
+    tty_ctrler.enabled[ttyx->id] = false;
+}
diff --git a/src/kernel/tty/tty.rs b/src/kernel/tty/tty.rs
index 2d6aa59..1f33a1a 100644
--- a/src/kernel/tty/tty.rs
+++ b/src/kernel/tty/tty.rs
@@ -1,20 +1,20 @@
-use std::{
-    io::{BufWriter, Write},
-    ptr::null_mut,
-};
+use std::ptr::null_mut;
 
 extern "C" {
     fn tty_new(tty_type: u8, mode: u8) -> *mut u8;
     fn tty_get(id: usize) -> *mut *mut u8;
     pub fn tty_text_print(ttyx: *mut u8, string: *mut u8, color: u32, bgcolor: u32);
     fn tty_get_id(tty: *mut u8) -> usize;
+
+    fn tty_enable(tty: *mut u8) -> bool;
+    fn tty_disable(tty: *mut u8);
 }
 
 pub enum Type {
     Invalid = 0,
     RawFramebuffer = 1,
     Display = 2,
-    VirtualTty = 3,
+    VirtualTerm = 3,
 }
 
 pub enum Mode {
@@ -50,12 +50,20 @@ impl Tty {
         unsafe { tty_get_id(self.tty_pointer) }
     }
 
+    pub fn enable(&self) {
+        unsafe { tty_enable(self.tty_pointer) };
+    }
+
+    pub fn disable(&self) {
+        unsafe { tty_disable(self.tty_pointer) };
+    }
+
     pub fn print(&self, msg: Message) {
         for MessageSection {
             mut msg,
             fgcolor,
             bgcolor,
-        } in msg.into_iter()
+        } in msg.0.into_iter()
         {
             unsafe {
                 let string = msg.as_bytes_mut() as *mut [u8] as *mut u8;
@@ -89,7 +97,7 @@ pub struct MessageSection {
     bgcolor: Color,
 }
 
-type Message = Vec<MessageSection>;
+pub struct Message(Vec<MessageSection>);
 
 pub struct MessageBuilder {
     msg: Message,
@@ -97,11 +105,13 @@ pub struct MessageBuilder {
 
 impl MessageBuilder {
     pub fn new() -> Self {
-        Self { msg: vec![] }
+        Self {
+            msg: Message(vec![]),
+        }
     }
 
     pub fn message(mut self, msg: String) -> Self {
-        self.msg.push(MessageSection {
+        self.msg.0.push(MessageSection {
             msg,
             fgcolor: Color(0xee, 0xee, 0xee),
             bgcolor: Color(0, 0, 0),
@@ -110,14 +120,14 @@ impl MessageBuilder {
     }
 
     pub fn background_color(mut self, color: Color) -> Self {
-        if let Some(msg) = self.msg.last_mut() {
+        if let Some(msg) = self.msg.0.last_mut() {
             msg.bgcolor = color;
         }
         self
     }
 
     pub fn foreground_color(mut self, color: Color) -> Self {
-        if let Some(msg) = self.msg.last_mut() {
+        if let Some(msg) = self.msg.0.last_mut() {
             msg.fgcolor = color;
         }
         self
diff --git a/src/libk/lst.c b/src/libk/lst.c
index 71b1cef..b858723 100644
--- a/src/libk/lst.c
+++ b/src/libk/lst.c
@@ -7,7 +7,7 @@
 
 lst_iterator_t *lst_new(usize start, usize end)
 {
-    lst_iterator_t *lst = memm_kernel_allocate(sizeof(lst_iterator_t), 0);
+    lst_iterator_t *lst = memm_kernel_allocate(sizeof(lst_iterator_t));
     lst->line.left = start;
     lst->line.right = end;
     lst->next = nullptr;