diff --git a/main.py b/main.py
index 62b0088..143216f 100644
--- a/main.py
+++ b/main.py
@@ -20,10 +20,14 @@ def get_data_from_db():
     return [BatchDataRead.from_orm(db_obj).dict() for db_obj in db_objs]
 
 
-st.session_state.setdefault('data_table', get_data_from_db())
-st.session_state.setdefault('configs', {})
+st.session_state.setdefault('data_table', [])
 st.session_state.setdefault('username', '')
 st.session_state.setdefault('evolve_r', 0.1)
+st.session_state.setdefault('configs', {
+    'evolve_r': st.session_state.evolve_r
+})
+if not st.session_state.data_table:
+    st.session_state.data_table = get_data_from_db()
 
 df = pd.DataFrame(data=st.session_state.data_table)
 
@@ -39,13 +43,19 @@ def train():
 def update_handler():
     edited_rows = st.session_state['edited_info'].get('edited_rows')
     for id_, update_data in edited_rows.items():
-        row_db = session.query(BatchData).where(BatchData.id == int(edited_df.loc[id_].id)).first()
-        logger.info(f"update: {update_data}")
+        row_id = int(edited_df.loc[id_].id)
+        row_db = session.query(BatchData).where(BatchData.id == row_id).first()
+        logger.info(f"{row_id=}, {update_data=}")
         for field in update_data:
             setattr(row_db, field, update_data[field])
         session.commit()
 
 
+def update_config(*args, **kwargs):
+    logger.debug(f"{args=}, {kwargs=}, {st.session_state.configs=}, {st.session_state.evolve_r=}")
+    st.session_state.configs['evolve_r'] = st.session_state.evolve_r
+
+
 with data_frame_container:
     edited_df = st.data_editor(
         df, key="edited_info",
@@ -63,14 +73,15 @@ with data_frame_container:
         })
 
 with config_container:
-    # st.empty()
-    st.session_state.configs['evolve_r'] = st.session_state.evolve_r
     st.json(st.session_state.configs)
 
 with st.sidebar:
     st.divider()
 
-    st.session_state.evolve_r = st.slider('evolve_r', min_value=0.0, max_value=0.5, value=st.session_state.evolve_r, step=0.01)
+    st.slider(label='evolve_r', key='evolve_r',
+              min_value=0.0, max_value=0.5, step=0.01,
+              on_change=update_config)
+    logger.debug(st.session_state.evolve_r)
     st.text_input("username", key='username')
     st.divider()
     st.button("启动", on_click=train)