diff --git a/tools/infer/utility.py b/tools/infer/utility.py
index cb7833a1b3a67dcce89b4056a81ade3959088647..fd72a19f6dac1bc4ae79565e9a85134e2cd6945d 100755
--- a/tools/infer/utility.py
+++ b/tools/infer/utility.py
@@ -172,7 +172,7 @@ def draw_ocr(image, boxes, txts, scores, draw_txt=True, drop_score=0.5):
                 continue
             font = ImageFont.truetype(
                 "./doc/simfang.ttf", font_size, encoding="utf-8")
-            new_txt = str(count) + ':  ' + txt + '    ' + str(scores[count])
+            new_txt = str(count) + ':  ' + txt + '    ' + '%.3f' % (scores[count])
             draw_txt.text(
                 (20, gap * (count + 1)), new_txt, txt_color, font=font)
             count += 1