diff --git a/paddleslim/quant/analysis.py b/paddleslim/quant/analysis.py
index d81e80f8eb52fa2ccbb8549a7de4a04b8a91af13..35b650f734e1d8aab30b5a4ddfced853336030af 100644
--- a/paddleslim/quant/analysis.py
+++ b/paddleslim/quant/analysis.py
@@ -308,5 +308,5 @@ class AnalysisQuant(object):
                 plt.title("Hist of variable {}".format(name))
                 plt.show()
                 pdf.savefig()
-            plt.close()
+                plt.close()
         _logger.info('Histogram plot is saved in {}'.format(pdf_path))