diff --git a/baidu-backup.sh b/baidu-backup.sh
index 1ed33a6..ff4a8c1 100755
--- a/baidu-backup.sh
+++ b/baidu-backup.sh
@@ -46,13 +46,27 @@ echo "[1/5] 📦 打包项目文件..."
 rm -f "$ZIP_FILE"
 cd "$PARENT_DIR"
 
-# 先统计文件总数
-TOTAL_FILES=$(find "$PROJECT_NAME" -not -path "${PROJECT_NAME}/.git/*" -type f | wc -l | tr -d ' ')
-echo "  📊 共 ${TOTAL_FILES} 个文件"
+# 需要排除的目录：依赖、编译产物、缓存（减小备份体积）
+ZIP_EXCLUDES=(
+    "${PROJECT_NAME}/.git/*"
+    "*/node_modules/*"
+    "*/.next/*"
+    "*/dist/*"
+    "*/.cache/*"
+    "*/.turbo/*"
+    "*/coverage/*"
+    "*.DS_Store"
+)
+
+# 先统计文件总数（与上面的排除规则保持一致，保证进度条准确）
+TOTAL_FILES=$(find "$PROJECT_NAME" \
+    -type d \( -name node_modules -o -name .git -o -name .next -o -name dist -o -name .cache -o -name .turbo -o -name coverage \) -prune \
+    -o -type f -print | wc -l | tr -d ' ')
+echo "  📊 共 ${TOTAL_FILES} 个文件（已排除依赖/编译/缓存）"
 
 # 打包并实时显示百分比
 COUNTER=0
-zip -r "$ZIP_FILE" "$PROJECT_NAME" -x "${PROJECT_NAME}/.git/*" 2>&1 | while IFS= read -r line; do
+zip -r "$ZIP_FILE" "$PROJECT_NAME" -x "${ZIP_EXCLUDES[@]}" 2>&1 | while IFS= read -r line; do
     COUNTER=$((COUNTER + 1))
     PCT=$((COUNTER * 100 / TOTAL_FILES))
     if [ $PCT -gt 100 ]; then PCT=100; fi