diff --git a/konabot/plugins/fx_process/fx_handle.py b/konabot/plugins/fx_process/fx_handle.py
index 396e73b..acc8165 100644
--- a/konabot/plugins/fx_process/fx_handle.py
+++ b/konabot/plugins/fx_process/fx_handle.py
@@ -4,6 +4,7 @@ from PIL import ImageEnhance
 from PIL import ImageChops
 from PIL import ImageOps
 import cv2
+from nonebot import logger
 
 from konabot.common.path import FONTS_PATH
 from konabot.plugins.fx_process.color_handle import ColorHandle
@@ -625,20 +626,20 @@ class ImageFilterImplement:
                      y_offset: int = 10,
                      blur: float = 10, 
                      opacity: float = 0.5,
-                     shadow_color = "black") -> Image.Image:
+                     shadow_color: str = "black") -> Image.Image:
         if image.mode != 'RGBA':
             image = image.convert('RGBA')
         offset = (-x_offset, -y_offset)
         # 创建阴影图层
         shadow_rgb = ColorHandle.parse_color(shadow_color)
+        logger.debug(f"Shadow color RGB: {shadow_rgb}")
         shadow = Image.new('RGBA', image.size, (0, 0, 0, 0))
         shadow_draw = ImageDraw.Draw(shadow)
-        shadow_draw.rectangle(
-            [0, 0, image.size[0], image.size[1]],
-            fill=(shadow_rgb[0], shadow_rgb[1], shadow_rgb[2], int(255 * opacity))
-        )
+        # 填充阴影颜色
+        shadow_draw.rectangle([(0, 0), image.size], fill=(shadow_rgb[0], shadow_rgb[1], shadow_rgb[2], 255))
         # 应用遮罩
-        shadow.putalpha(image.split()[-1])
+        alpha = image.split()[-1].point(lambda p: p * opacity)
+        shadow.putalpha(alpha)
         # 移动
         shadow = shadow.transform(
             shadow.size,