diff --git a/src/api.ts b/src/api.ts
index 8951854..14fc8fb 100644
--- a/src/api.ts
+++ b/src/api.ts
@@ -390,7 +390,9 @@ export async function sendGroupImageMessage(
   content?: string
 ): Promise<{ id: string; timestamp: string }> {
   // 先上传图片获取 file_info
+  console.log(`[qqbot-api] sendGroupImageMessage: uploading image from URL: ${imageUrl}`);
   const uploadResult = await uploadGroupMedia(accessToken, groupOpenid, MediaFileType.IMAGE, imageUrl, false);
+  console.log(`[qqbot-api] sendGroupImageMessage: upload success, file_info: ${uploadResult.file_info?.slice(0, 50)}...`);
   // 再发送富媒体消息
   return sendGroupMediaMessage(accessToken, groupOpenid, uploadResult.file_info, msgId, content);
 }
diff --git a/src/gateway.ts b/src/gateway.ts
index 98b84ac..2896cea 100644
--- a/src/gateway.ts
+++ b/src/gateway.ts
@@ -541,6 +541,7 @@ export async function startGateway(ctx: GatewayContext): Promise<void> {
 
                 try {
                   // 先发送图片（如果有）
+                  log?.info(`[qqbot:${account.accountId}] imageUrls to send: ${JSON.stringify(imageUrls)}, imageServerBaseUrl: ${imageServerBaseUrl}`);
                   for (const imageUrl of imageUrls) {
                     try {
                       await sendWithTokenRetry(async (token) => {
diff --git a/src/image-server.ts b/src/image-server.ts
index 8bda378..6e4e565 100644
--- a/src/image-server.ts
+++ b/src/image-server.ts
@@ -335,7 +335,9 @@ export function saveImage(
 
   // 返回访问 URL
   const baseUrl = currentConfig.baseUrl || `http://localhost:${currentConfig.port}`;
-  return `${baseUrl}/images/${imageId}.${ext}`;
+  const resultUrl = `${baseUrl}/images/${imageId}.${ext}`;
+  console.log(`[image-server] saveImage: generated URL: ${resultUrl} (baseUrl: ${baseUrl})`);
+  return resultUrl;
 }
 
 /**