diff --git a/src/api/server.rs b/src/api/server.rs
index 680db34..a0e22da 100644
--- a/src/api/server.rs
+++ b/src/api/server.rs
@@ -516,7 +516,9 @@ async fn register(
         }
     }
 
-    let file_manager = FileManager::new(std::path::PathBuf::from("."));
+    let file_manager = FileManager::new(std::path::PathBuf::from(
+        crate::core::config::OUTPUT_DIR.as_str(),
+    ));
     let json_str =
         serde_json::to_string(&probe_result).map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
     let _json_path = file_manager
@@ -643,8 +645,10 @@ async fn probe(
             StatusCode::INTERNAL_SERVER_ERROR
         })?;
 
-        // Save probe.json
-        let file_manager = FileManager::new(std::path::PathBuf::from("."));
+        // Save probe.json to OUTPUT_DIR
+        let file_manager = FileManager::new(std::path::PathBuf::from(
+            crate::core::config::OUTPUT_DIR.as_str(),
+        ));
         let json_str = serde_json::to_string(&result).map_err(|e| {
             tracing::error!("Failed to serialize probe result: {}", e);
             StatusCode::INTERNAL_SERVER_ERROR