diff --git a/csst_dfs_api_local/common/ingest.py b/csst_dfs_api_local/common/ingest.py
index 5ea9079b4d0de5102822fa81c95af43824adaf69..37f92450f35f79a71713a2a7998d9bdfe5690c4d 100644
--- a/csst_dfs_api_local/common/ingest.py
+++ b/csst_dfs_api_local/common/ingest.py
@@ -90,8 +90,8 @@ def ingesst_one(file_path, db, copyfiles):
     #level0-header
     ra_obj = header["RA_OBJ"]
     dec_obj = header["DEC_OBJ"]
-
-    c = db.execute("insert into t_level0_header \
+    db.execute("delete from t_level0_header where id=?",(level0_id,))    
+    db.execute("insert into t_level0_header \
         (id, obs_time, exp_time, ra, `dec`, create_time) \
         values (?,?,?,?,?,?)",
         (level0_id, exp_start_time, exp_time, ra_obj, dec_obj, create_time))