diff --git a/plugins/dify/main.py b/plugins/dify/main.py
index 982c039..6ca0a40 100644
--- a/plugins/dify/main.py
+++ b/plugins/dify/main.py
@@ -154,7 +154,7 @@ class DifyPlugin(MessagePluginInterface):
                         await bot.send_image_message((roomid if roomid else sender), Path(response))
                     else:
                         # 如果是普通文本，则在长度大于100字时，转为图片发送
-                        if len(response) > 400:
+                        if len(response) > 800:
                             # 转图片
                             output_image = f"dify_output_{int(time.time())}.png"
                             respath = await convert_md_str_to_image(response, output_image)
@@ -221,7 +221,7 @@ class DifyPlugin(MessagePluginInterface):
                     await bot.send_image_message((roomid if roomid else sender), Path(response))
                 else:
                     # 如果是普通文本，则在长度大于100字时，转为图片发送
-                    if len(response) > 400:
+                    if len(response) > 800:
                         # 转图片
                         output_image = f"dify_output_{int(time.time())}.png"
                         respath = await convert_md_str_to_image(response, output_image)