diff --git a/README.md b/README.md
index 2d50f4d..fcb1187 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,16 @@ image_release.zip contains failure case images and benchmark evaluation images w
 pip3 install fire
 python3 create_lmdb_dataset.py --inputPath data/ --gtFile data/gt.txt --outputPath result/
 ```
+The structure of data folder as below.
+```
+data
+├── gt.txt
+└── test
+    ├── word_1.png
+    ├── word_2.png
+    ├── word_3.png
+    └── ...
+```
 At this time, `gt.txt` should be `{imagepath}\t{label}\n` <br>
 For example
 ```