diff --git a/propeller/paddle/train/metrics.py b/propeller/paddle/train/metrics.py
index 5603ee2c0a22c45c21ec5ff29e1d65be912663f8..096b3808d0be43928452e91df0f9e23460886d66 100644
--- a/propeller/paddle/train/metrics.py
+++ b/propeller/paddle/train/metrics.py
@@ -173,8 +173,8 @@ class Precision(Metrics):
     def eval(self):
         """doc"""
         tp = (self.label_saver & self.pred_saver).astype(np.int64).sum()
-        t = self.label_saver.astype(np.int64).sum()
-        return tp / t
+        p = self.pred_saver.astype(np.int64).sum()
+        return tp / p
 
 
 class Recall(Precision):
@@ -183,8 +183,8 @@ class Recall(Precision):
     def eval(self):
         """doc"""
         tp = (self.label_saver & self.pred_saver).astype(np.int64).sum()
-        p = (self.label_saver).astype(np.int64).sum()
-        return tp / p
+        t = (self.label_saver).astype(np.int64).sum()
+        return tp / t
 
 
 class F1(Precision):
@@ -195,8 +195,8 @@ class F1(Precision):
         tp = (self.label_saver & self.pred_saver).astype(np.int64).sum()
         t = self.label_saver.astype(np.int64).sum()
         p = self.pred_saver.astype(np.int64).sum()
-        precision = tp / (t + 1.e-6)
-        recall = tp / (p + 1.e-6)
+        precision = tp / (p + 1.e-6)
+        recall = tp / (t + 1.e-6)
         return 2 * precision * recall / (precision + recall + 1.e-6)