diff --git a/backend/src/main/java/com/music/service/LibraryMergeService.java b/backend/src/main/java/com/music/service/LibraryMergeService.java
index 1b77bd0..ae77ae2 100644
--- a/backend/src/main/java/com/music/service/LibraryMergeService.java
+++ b/backend/src/main/java/com/music/service/LibraryMergeService.java
@@ -141,7 +141,7 @@ public class LibraryMergeService {
                                             targetPath.getFileName().toString() + ".backup");
                                     Files.copy(targetPath, backupPath, StandardCopyOption.REPLACE_EXISTING);
                                 }
-                                Files.copy(audioFile, targetPath, StandardCopyOption.REPLACE_EXISTING);
+                                Files.move(audioFile, targetPath, StandardCopyOption.REPLACE_EXISTING);
                                 wasUpgraded = true;
                                 upgraded.incrementAndGet();
                             } else {
@@ -166,9 +166,9 @@ public class LibraryMergeService {
                             continue;
                         }
                     } else {
-                        // 新文件，直接复制
+                        // 新文件，直接移动
                         Files.createDirectories(targetPath.getParent());
-                        Files.copy(audioFile, targetPath, StandardCopyOption.REPLACE_EXISTING);
+                        Files.move(audioFile, targetPath, StandardCopyOption.REPLACE_EXISTING);
                     }
 
                     tracksMerged.incrementAndGet();
@@ -178,7 +178,7 @@ public class LibraryMergeService {
                     if (lyricsFile != null && Files.exists(lyricsFile)) {
                         Path lyricsTarget = targetPath.resolveSibling(lyricsFile.getFileName().toString());
                         if (!Files.exists(lyricsTarget) || wasUpgraded) {
-                            Files.copy(lyricsFile, lyricsTarget, StandardCopyOption.REPLACE_EXISTING);
+                            Files.move(lyricsFile, lyricsTarget, StandardCopyOption.REPLACE_EXISTING);
                         }
                     }
 
@@ -189,8 +189,8 @@ public class LibraryMergeService {
                         if (coverFile != null && Files.exists(coverFile)) {
                             Path coverTarget = albumDir.resolve("cover.jpg");
                             if (!Files.exists(coverTarget)) {
-                                // 目标目录没有封面，直接复制
-                                Files.copy(coverFile, coverTarget, StandardCopyOption.REPLACE_EXISTING);
+                                // 目标目录没有封面，直接移动
+                                Files.move(coverFile, coverTarget, StandardCopyOption.REPLACE_EXISTING);
                             } else {
                                 // 比较封面，保留更好的版本
                                 if (isBetterCover(coverFile, coverTarget)) {
@@ -198,7 +198,7 @@ public class LibraryMergeService {
                                         Path backupPath = coverTarget.resolveSibling("cover.jpg.backup");
                                         Files.copy(coverTarget, backupPath, StandardCopyOption.REPLACE_EXISTING);
                                     }
-                                    Files.copy(coverFile, coverTarget, StandardCopyOption.REPLACE_EXISTING);
+                                    Files.move(coverFile, coverTarget, StandardCopyOption.REPLACE_EXISTING);
                                 }
                             }
                         }
diff --git a/frontend/src/components/MergeTab.vue b/frontend/src/components/MergeTab.vue
index f98d998..b4f412b 100644
--- a/frontend/src/components/MergeTab.vue
+++ b/frontend/src/components/MergeTab.vue
@@ -36,6 +36,13 @@
               </el-input>
             </el-form-item>
 
+            <div class="strategy-tip merge-tip">
+              <el-icon class="tip-icon"><Warning /></el-icon>
+              <div class="tip-content">
+                <strong>重要提示</strong>：文件会<strong>移动</strong>到主库（源目录 staging 中的文件会被移走，不保留）；歌词和封面一并移动。
+              </div>
+            </div>
+
             <el-form-item label="合并策略">
               <el-checkbox v-model="form.smartUpgrade">启用智能升级</el-checkbox>
               <el-checkbox v-model="form.keepBackup">保留旧版本备份</el-checkbox>