diff --git a/Netease-sync/server.js b/Netease-sync/server.js
index e9f2895..a2b3754 100644
--- a/Netease-sync/server.js
+++ b/Netease-sync/server.js
@@ -353,6 +353,13 @@ function buildDownloadCandidates(source, songId, songUrl, types) {
     return candidates;
 }
 
+function formatSongLog(song, source) {
+    const name = song?.name || 'unknown';
+    const id = song?.id || 'unknown';
+    const src = source || song?.source || 'unknown';
+    return `${name} (id=${id}, source=${src})`;
+}
+
 async function tryDownloadWithCandidates(song, source, baseName, candidates, downloadHeaders) {
     const tried = new Set();
 
@@ -362,7 +369,7 @@ async function tryDownloadWithCandidates(song, source, baseName, candidates, dow
 
         const directUrl = await resolveTuneHubAudioUrl(candidate.apiUrl);
         if (!directUrl) {
-            console.warn(`[Sync] Failed to resolve audio url for ${song.name} (${candidate.label})`);
+            console.warn(`[Sync] Failed to resolve audio url for ${formatSongLog(song, source)} (${candidate.label}) api=${candidate.apiUrl}`);
             continue;
         }
 
@@ -412,7 +419,7 @@ async function tryDownloadWithCandidates(song, source, baseName, candidates, dow
                 return true; // Downloaded (fallback)
             }
         } catch (err) {
-            console.error(`[Sync] Download failed for ${song.name} (${candidate.label}):`, err.message);
+            console.error(`[Sync] Download failed for ${formatSongLog(song, source)} (${candidate.label}) url=${directUrl}:`, err.message);
             if (fs.existsSync(tempFile)) fs.unlinkSync(tempFile);
         }
     }