diff --git a/conf_experiment.yaml b/conf_experiment.yaml
index 012f9a9..5566629 100644
--- a/conf_experiment.yaml
+++ b/conf_experiment.yaml
@@ -5,6 +5,8 @@ meta_seed: 0
 
 test:  # only for test scenarios
   n_sample: 1
+  n_iter: 100
 
 not_test:  # normal scenarios
   n_sample: 50
+  n_iter: 100
diff --git a/controller_db.py b/controller_db.py
index 896c938..550a28c 100644
--- a/controller_db.py
+++ b/controller_db.py
@@ -134,6 +134,7 @@ class ControllerDB:
             idx_scenario=idx_scenario,
             idx_init_removal=idx_init_removal,
             n_sample=int(self.dct_parameter['n_sample']),
+            n_iter=int(self.dct_parameter['n_iter']),
             dct_lst_init_disrupt_firm_prod=dct_lst_init_disrupt_firm_prod,
             g_bom=g_bom,
             n_max_trial=n_max_trial,
diff --git a/model.py b/model.py
index 8c06bfd..1ffbb89 100644
--- a/model.py
+++ b/model.py
@@ -12,7 +12,8 @@ class Model(ap.Model):
     def setup(self):
         # self para
         self.sample = self.p.sample
-        self.int_stop_times, self.int_stop_t = 0, None
+        self.int_stop_ts = 0
+        self.int_n_iter = int(self.p.n_iter)
         self.product_network = None  # agentpy network
         self.firm_network = None  # agentpy network
         self.firm_prod_network = None  # networkx
@@ -365,9 +366,12 @@ class Model(ap.Model):
                     continue
                 break
             else:
-                self.int_stop_times = self.t
+                self.int_stop_ts = self.t
                 self.stop()
 
+        if self.t == self.int_n_iter:
+            self.stop()
+
     def step(self):
         print('\n', '=' * 20, 'step', self.t, '=' * 20)
 
@@ -445,7 +449,7 @@ class Model(ap.Model):
         #                     db_session.commit()
         # self.sample.is_done_flag = 1
         # self.sample.computer_name = platform.node()
-        # self.sample.stop_t = self.int_stop_times
+        # self.sample.stop_t = self.int_stop_ts
         # db_session.commit()
 
     def draw_network(self):