diff --git a/examples/cloud-edge-collaborative-inference-for-llm/testenv/accuracy.py b/examples/cloud-edge-collaborative-inference-for-llm/testenv/accuracy.py
index a3dc088fd..386548fd9 100644
--- a/examples/cloud-edge-collaborative-inference-for-llm/testenv/accuracy.py
+++ b/examples/cloud-edge-collaborative-inference-for-llm/testenv/accuracy.py
@@ -54,6 +54,6 @@ def acc(y_true, y_pred):
     same_elements = [y_pred[i] == y_true[i] for i in range(len(y_pred))]
 
     # 计算相同元素的数量
-    acc = sum(same_elements) / len(same_elements)
+    acc = sum(same_elements) / len(same_elements) if same_elements else 0.0
 
     return round(acc * 100, 2)
diff --git a/examples/government/singletask_learning_bench/objective/testenv/acc.py b/examples/government/singletask_learning_bench/objective/testenv/acc.py
index a4041f48d..037d2419c 100644
--- a/examples/government/singletask_learning_bench/objective/testenv/acc.py
+++ b/examples/government/singletask_learning_bench/objective/testenv/acc.py
@@ -34,6 +34,6 @@ def acc(y_true, y_pred):
         
     same_elements = [y_pred[i] == y_true[i] for i in range(len(y_pred))]
 
-    acc = sum(same_elements) / len(same_elements)
+    acc = sum(same_elements) / len(same_elements) if same_elements else 0.0
     
     return acc
diff --git a/examples/government_rag/singletask_learning_bench/testenv/acc.py b/examples/government_rag/singletask_learning_bench/testenv/acc.py
index 8b302c521..5e5808274 100644
--- a/examples/government_rag/singletask_learning_bench/testenv/acc.py
+++ b/examples/government_rag/singletask_learning_bench/testenv/acc.py
@@ -47,7 +47,7 @@ def acc_model(y_true, y_pred):
             real_locations.append(y_location[i])
 
     same_elements = [get_last_letter(real_y_pred[i]) == real_y_true[i] for i in range(len(real_y_pred))]
-    global_acc = sum(same_elements) / len(same_elements)
+    global_acc = sum(same_elements) / len(same_elements) if same_elements else 0.0
 
     province_acc = {}
     for i in range(len(real_y_pred)):
@@ -108,7 +108,7 @@ def acc_global(y_true, y_pred):
             real_locations.append(y_location[i])
 
     same_elements = [get_last_letter(real_y_pred[i]) == real_y_true[i] for i in range(len(real_y_pred))]
-    global_acc = sum(same_elements) / len(same_elements)
+    global_acc = sum(same_elements) / len(same_elements) if same_elements else 0.0
 
     province_acc = {}
     for i in range(len(real_y_pred)):
@@ -169,7 +169,7 @@ def acc_local(y_true, y_pred):
             real_locations.append(y_location[i])
 
     same_elements = [get_last_letter(real_y_pred[i]) == real_y_true[i] for i in range(len(real_y_pred))]
-    global_acc = sum(same_elements) / len(same_elements)
+    global_acc = sum(same_elements) / len(same_elements) if same_elements else 0.0
 
     province_acc = {}
     for i in range(len(real_y_pred)):
@@ -230,7 +230,7 @@ def acc_other(y_true, y_pred):
             real_locations.append(y_location[i])
 
     same_elements = [get_last_letter(real_y_pred[i]) == real_y_true[i] for i in range(len(real_y_pred))]
-    global_acc = sum(same_elements) / len(same_elements)
+    global_acc = sum(same_elements) / len(same_elements) if same_elements else 0.0
 
     province_acc = {}
     for i in range(len(real_y_pred)):
diff --git a/examples/llm_simple_qa/testenv/acc.py b/examples/llm_simple_qa/testenv/acc.py
index beccdadfd..181bfbb12 100644
--- a/examples/llm_simple_qa/testenv/acc.py
+++ b/examples/llm_simple_qa/testenv/acc.py
@@ -35,6 +35,6 @@ def acc(y_true, y_pred):
         
     same_elements = [y_pred[i] == y_true[i] for i in range(len(y_pred))]
 
-    acc = sum(same_elements) / len(same_elements)
+    acc = sum(same_elements) / len(same_elements) if same_elements else 0.0
     
     return acc