diff --git a/scripts/deploy_upyun.sh b/scripts/deploy_upyun.sh
index da1076cf..6323a48c 100644
--- a/scripts/deploy_upyun.sh
+++ b/scripts/deploy_upyun.sh
@@ -19,6 +19,13 @@ LOCAL_DIR="${1:-./public}"
 REMOTE_DIR="${2:-/}"
 THREADS="${3:-10}"
 
+# 又拍云 upx sync 的线程数限制在 1-10 之间
+if [ "$THREADS" -lt 1 ]; then
+    THREADS=1
+elif [ "$THREADS" -gt 10 ]; then
+    THREADS=10
+fi
+
 # 检查环境变量
 SERVICE_NAME="${UPYUN_SERVICE:-}"
 OPERATOR="${UPYUN_OPERATOR:-}"