diff --git a/app/algorithms/burst_location/burst_locator.py b/app/algorithms/burst_location/burst_locator.py
index fc51e02..c7307b6 100644
--- a/app/algorithms/burst_location/burst_locator.py
+++ b/app/algorithms/burst_location/burst_locator.py
@@ -140,7 +140,7 @@ def area_output_num_ki_improve(
     final_center = []
     all_node_iter = []
     if similarity.index.is_unique == False:
-        total_center_num = len(list(set(similarity.index)))
+        total_center_num = len(set(similarity.index))
     else:
         total_center_num = len(similarity.index)
 
@@ -155,7 +155,7 @@ def area_output_num_ki_improve(
             final_area = final_area + candidate_group[top_center_index[j]]
             all_node_iter = all_node_iter + list(new_all_node[top_center_index[j]])
         final_center.append(top_center)
-        final_area = list(set(final_area))
+        final_area = sorted(set(final_area))
 
     if len(final_area) > top_pipe_num_max:
         if_end = 0
@@ -171,7 +171,7 @@ def area_output_num_ki_improve(
             top_center = similarity.index[i]
             top_center_index = candidate_center.index(top_center)
             temp_group = final_area + candidate_group[top_center_index]
-            temp_area = list(set(temp_group))
+            temp_area = sorted(set(temp_group))
 
             if len(temp_area) < top_pipe_num_min:
 
@@ -196,8 +196,8 @@ def area_output_num_ki_improve(
                     final_area = temp_area
                 break
 
-    final_center = list(set(final_center))
-    all_node_iter = list(set(all_node_iter))
+    final_center = sorted(set(final_center))
+    all_node_iter = sorted(set(all_node_iter))
     return final_area, final_center, all_node_iter, if_end
 
 
@@ -592,8 +592,8 @@ def DN_search_multi_simple_add_flow_count_new(
             final_area = final_area + final_area_t
             final_center = final_center + final_center_t
 
-            final_area = list(set(final_area))
-            final_center = list(set(final_center))
+            final_area = sorted(set(final_area))
+            final_center = sorted(set(final_center))
             if if_end == 1:
                 exit_condition = "candidate_area_if_end"
                 break
diff --git a/app/algorithms/burst_location/network_model.py b/app/algorithms/burst_location/network_model.py
index 4c22513..993c06f 100644
--- a/app/algorithms/burst_location/network_model.py
+++ b/app/algorithms/burst_location/network_model.py
@@ -32,7 +32,7 @@ def read_inf_inp(wn):
         pipe = wn.get_link(p)
         if pipe.initial_status == 0:  # 状态为'Closed'
             n_pipe.append(p)
-    candidate_pipe_init = list(set(all_pipe) - set(n_pipe))
+    candidate_pipe_init = sorted(set(all_pipe) - set(n_pipe))
     pipe_start_node = wn.query_link_attribute(
         "start_node_name", link_type=wntr.network.model.Pipe
     )
diff --git a/app/algorithms/burst_location/network_partitioner.py b/app/algorithms/burst_location/network_partitioner.py
index a399252..81d4cf5 100644
--- a/app/algorithms/burst_location/network_partitioner.py
+++ b/app/algorithms/burst_location/network_partitioner.py
@@ -37,7 +37,7 @@ def pick_center_pipe(node_x, node_y, candidate_pipe, pipe_start_node, pipe_end_n
 def find_new_center_pipe(
     node_x, node_y, candidate_pipe, pipe_start_node, pipe_end_node, record_center
 ):
-    new_candidate_pipe = list(set(candidate_pipe) - set(record_center))
+    new_candidate_pipe = sorted(set(candidate_pipe) - set(record_center))
     if new_candidate_pipe == []:
         new_candidate_pipe = candidate_pipe
     center_t = pick_center_pipe(