diff --git a/ERNIE/predict_classifier.py b/ERNIE/predict_classifier.py
index ecda8a3b77cee416755b7d32d6a4e1486fdc6a63..e6115dabe31e56ef698c3632bc5fd0eea865db17 100644
--- a/ERNIE/predict_classifier.py
+++ b/ERNIE/predict_classifier.py
@@ -22,6 +22,12 @@ import time
 import argparse
 import numpy as np
 import multiprocessing
+
+# NOTE(paddle-dev): All of these flags should be
+# set before `import paddle`. Otherwise, it would
+# not take any effect.
+os.environ['FLAGS_eager_delete_tensor_gb'] = '0'  # enable gc
+
 import paddle.fluid as fluid
 
 from reader.task_reader import ClassifyReader