diff --git a/system/flcore/clients/clientperavg.py b/system/flcore/clients/clientperavg.py
index 7e7a82a2..6bf57e3a 100644
--- a/system/flcore/clients/clientperavg.py
+++ b/system/flcore/clients/clientperavg.py
@@ -108,4 +108,49 @@ def load_train_data_one_step(self, batch_size=None):
         if batch_size == None:
             batch_size = self.batch_size
         train_data = read_client_data(self.dataset, self.id, is_train=True)
-        return DataLoader(train_data, batch_size, drop_last=True, shuffle=False)
\ No newline at end of file
+        return DataLoader(train_data, batch_size, drop_last=True, shuffle=False)
+
+
+    def train_metrics(self, model=None):
+        trainloader = self.load_train_data(self.batch_size*2)
+        if model == None:
+            model = self.model
+        model.eval()
+
+        train_num = 0
+        losses = 0
+        for X, Y in trainloader:
+            # step 1
+            if type(X) == type([]):
+                x = [None, None]
+                x[0] = X[0][:self.batch_size].to(self.device)
+                x[1] = X[1][:self.batch_size]
+            else:
+                x = X[:self.batch_size].to(self.device)
+            y = Y[:self.batch_size].to(self.device)
+            if self.train_slow:
+                time.sleep(0.1 * np.abs(np.random.rand()))
+            self.optimizer.zero_grad()
+            output = self.model(x)
+            loss = self.loss(output, y)
+            loss.backward()
+            self.optimizer.step()
+
+            # step 2
+            if type(X) == type([]):
+                x = [None, None]
+                x[0] = X[0][self.batch_size:].to(self.device)
+                x[1] = X[1][self.batch_size:]
+            else:
+                x = X[self.batch_size:].to(self.device)
+            y = Y[self.batch_size:].to(self.device)
+            if self.train_slow:
+                time.sleep(0.1 * np.abs(np.random.rand()))
+            self.optimizer.zero_grad()
+            output = self.model(x)
+            loss1 = self.loss(output, y)
+
+            train_num += y.shape[0]
+            losses += loss1.item() * y.shape[0]
+
+        return losses, train_num
\ No newline at end of file
diff --git a/system/flcore/servers/serverperavg.py b/system/flcore/servers/serverperavg.py
index 1868d19a..6f092d3b 100644
--- a/system/flcore/servers/serverperavg.py
+++ b/system/flcore/servers/serverperavg.py
@@ -1,5 +1,6 @@
 import copy
 import torch
+import numpy as np
 from flcore.clients.clientperavg import clientPerAvg
 from flcore.servers.serverbase import Server
 from threading import Thread
@@ -68,4 +69,40 @@ def evaluate_one_step(self):
         test_acc = sum(stats[2])*1.0 / sum(stats[1])
         
         self.rs_test_acc.append(test_acc)
-        print("Average Test Accurancy: {:.4f}".format(test_acc))
\ No newline at end of file
+        print("Average Test Accurancy: {:.4f}".format(test_acc))
+
+
+    def evaluate_one_step(self, acc=None, loss=None):
+        models_temp = []
+        for c in self.clients:
+            models_temp.append(copy.deepcopy(c.model))
+            c.train_one_step()
+        stats = self.test_metrics()
+        # set the local model back on clients for training process
+        for i, c in enumerate(self.clients):
+            c.clone_model(models_temp[i], c.model)
+            
+        stats_train = self.train_metrics()
+        # set the local model back on clients for training process
+        for i, c in enumerate(self.clients):
+            c.clone_model(models_temp[i], c.model)
+
+        accs = [a / n for a, n in zip(stats[2], stats[1])]
+
+        test_acc = sum(stats[2])*1.0 / sum(stats[1])
+        train_loss = sum(stats_train[2])*1.0 / sum(stats_train[1])
+        
+        if acc == None:
+            self.rs_test_acc.append(test_acc)
+        else:
+            acc.append(test_acc)
+        
+        if loss == None:
+            self.rs_train_loss.append(train_loss)
+        else:
+            loss.append(train_loss)
+
+        print("Averaged Train Loss: {:.4f}".format(train_loss))
+        print("Averaged Test Accurancy: {:.4f}".format(test_acc))
+        # self.print_(test_acc, train_acc, train_loss)
+        print("Std Test Accurancy: {:.4f}".format(np.std(accs)))
\ No newline at end of file