diff --git a/src-tauri/src/utils/download_manager.rs b/src-tauri/src/utils/download_manager.rs
index b09f690..65c67ef 100644
--- a/src-tauri/src/utils/download_manager.rs
+++ b/src-tauri/src/utils/download_manager.rs
@@ -259,6 +259,7 @@ impl DownloadManager {
                 "--rpc-listen-all=false",
                 &format!("--rpc-listen-port={}", port),
                 &format!("--user-agent={}", UA),
+                "--dir=/tmp/spark-store", // 设置下载目录为 /tmp/spark-store
             ])
             .spawn()
             .map_err(|e| format!("启动 aria2 失败: {}", e)).unwrap();