diff --git a/.gitignore b/.gitignore
index 68ebbb2..bcd729b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -160,8 +160,8 @@ cython_debug/
 #.idea/
 
 output/
-data/
 legacy/
+data/
 *.svg
 .DS_Store
 .VSCodeCounter/
\ No newline at end of file
diff --git a/example/.gitkeep b/example/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/example/demo.json b/example/demo.json
new file mode 100644
index 0000000..9722865
--- /dev/null
+++ b/example/demo.json
@@ -0,0 +1,46 @@
+{
+    "type": 1,
+    "exit": {
+        "seq": "758"
+    },
+    "lines": [
+        [
+            {
+                "type": 5,
+                "info": {
+                    "main_name": "S1",
+                    "sub_name": "",
+                    "prov": "吉"
+                }
+            }
+        ],
+        [
+            {
+                "type": 0,
+                "info": {
+                    "text": "抚 松"
+                }
+            },
+            {
+                "type": 7,
+                "info": {
+                    "name": "长白山景区"
+                }
+            }
+        ],
+        [
+            {
+                "type": 0,
+                "info": {
+                    "text": "池西区"
+                }
+            },
+            {
+                "type": 0,
+                "info": {
+                    "text": "长白山机场"
+                }
+            }
+        ]
+    ]
+}
\ No newline at end of file
diff --git a/rect.png b/rect.png
deleted file mode 100644
index fcf0018..0000000
Binary files a/rect.png and /dev/null differ
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..ed38fe2
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,4 @@
+svgwrite
+cairosvg
+lxml
+pillow
\ No newline at end of file
diff --git a/test/main.py b/test/main.py
index 319b88e..fc7a610 100644
--- a/test/main.py
+++ b/test/main.py
@@ -1,5 +1,6 @@
 import os
 import sys
+import time
 sys.path.append(os.getcwd())
 
 import svgwrite
@@ -47,9 +48,9 @@ text_size = 40 * SCALE
 content_width = min_width
 content_height = min_height + exit_height + 2 * safe_area_size
 
-data_file_name = input('data file name(./data/*.json):')
+data_file_path = input('data file path(*.json):')
 
-data_file_path = './data/{}.json'.format(data_file_name)
+data_file_name = 'image_{}'.format(time.strftime('%Y%m%d%H%M%S'))
 svg_file_path = './output/{}.svg'.format(data_file_name)
 png_file_path = './output/{}.png'.format(data_file_name)
 # load data
@@ -136,7 +137,7 @@ for line in lines:
 content_height = max(content_height, sum(line_heights) + 2 * exit_height + (len(line_heights) + 2) * space_size + 2 * safe_area_size)
 
 # rect
-dwg = svgwrite.Drawing(svg_file_path.format(data_file_name), profile='tiny', width=content_width, height=content_height)
+dwg = svgwrite.Drawing(svg_file_path, profile='tiny', width=content_width, height=content_height)
 
 if obj_type == 1:
     exit_item.draw(dwg, content_width - exit_item.width(), 0)