diff --git a/lua/Trans/core/conf.lua b/lua/Trans/core/conf.lua
index f269609..63b2040 100644
--- a/lua/Trans/core/conf.lua
+++ b/lua/Trans/core/conf.lua
@@ -58,6 +58,8 @@ return {
             spinner           = 'dots',
             ---@type string -- TODO :support replace with {{special word}}
             fallback_message  = '翻译超时或没有找到相关的翻译',
+            auto_resize       = true,
+            padding           = 10, -- only work when auto_resize is true
             keymaps           = {
                 play         = '_',
                 pageup       = '[[',
diff --git a/lua/Trans/core/window.lua b/lua/Trans/core/window.lua
index f5da06f..d5374a2 100644
--- a/lua/Trans/core/window.lua
+++ b/lua/Trans/core/window.lua
@@ -95,21 +95,17 @@ end
 ---@param opts
 ---|{ width: integer, height: integer }
 function window:resize(opts)
-    local width  = opts.width
-    local height = opts.height
-
-
-    if self:height() ~= height then
+    if opts.height and self:height() ~= opts.height then
         self:smooth_expand {
             field = 'height',
-            to = height
+            to = opts.height
         }
     end
 
-    if self:width() ~= width then
+    if opts.width and self:width() ~= opts.width then
         self:smooth_expand {
             field = 'width',
-            to = width
+            to = opts.width
         }
     end
 end
diff --git a/lua/Trans/frontend/hover/init.lua b/lua/Trans/frontend/hover/init.lua
index 40bb47b..18e0a5e 100644
--- a/lua/Trans/frontend/hover/init.lua
+++ b/lua/Trans/frontend/hover/init.lua
@@ -128,7 +128,6 @@ function M:wait(tbl, name, timeout)
     buffer[1] = ''
 end
 
-
 ---Display Result in hover window
 ---@param _ TransData
 ---@param result TransResult
@@ -148,8 +147,8 @@ function M:process(_, result)
     local window = self.window
     local display_size = Trans.util.display_size(self.buffer:lines(), opts.width)
     if window and window:is_valid() then
-        -- win:adjust_height(opts.height)
-        display_size.width = math.min(opts.width, display_size.width + 6)
+        ---@diagnostic disable-next-line: assign-type-mismatch
+        display_size.width = opts.auto_resize and math.min(opts.width, display_size.width + opts.padding) or nil
         window:resize(display_size)
     else
         window = self:init_window {