diff --git a/main.py b/main.py
index daefdc8d552ab681d18585e5911ed1cee0691cdf..e0c4afbbc9ecbc775b94740cc58b85adbf2dbf28 100644
--- a/main.py
+++ b/main.py
@@ -1,20 +1,33 @@
 import streamlit as st
+from PIL import Image
 
-st.title("BMI计算器")
+# Page Title
+st.title("合同签字系统")
 
-# 显示输入框
-height = st.slider("身高（单位：m）", 1.0, 2.5, step=0.01)
-weight = st.slider("体重（单位：kg）", 20, 200)
+# Upload File
+file_uploaded = st.file_uploader("上传你的合同文件", type=['pdf'])
 
-# 点击按钮计算BMI
-if st.button("计算BMI"):
-    bmi = weight / (height ** 2)
-    st.write("您的BMI指数为：{:.1f}".format(bmi))
-    if bmi < 18.5:
-        st.write("您的体重过轻，请注意营养均衡！")
-    elif bmi < 24.9:
-        st.write("您的体重正常，继续保持！")
-    elif bmi < 29.9:
-        st.write("您的体重过重，请注意控制饮食！")
-    else:
-        st.write("您的体重肥胖，需要立即采取措施！")
+if file_uploaded is not None:
+    # Display Contract
+    st.write("你的合同文件：")
+    pdf_bytes = file_uploaded.read()
+    st.write(pdf_bytes)
+    
+    # Contract Signature
+    st.write("请在这里签字：")
+    signature_canvas = st_canvas(
+        fill_color='rgba(255, 165, 0, 0.3)',  # 颜色
+        stroke_width=5,  # 笔画粗细
+        stroke_color='rgb(255, 165, 0)',  # 笔画颜色
+        background_color='white',  # 背景颜色
+        height=200,  # 画布高度
+        width=None,  # 画布宽度（默认为100%，可自适应）
+        drawing_mode="freedraw",  # 笔画模式
+        key="signature_canvas",
+    )
+    
+    # Signature Save
+    if st.button("保存签名"):
+        image = Image.frombytes('RGB', signature_canvas.shape, signature_canvas.image_data)
+        image.save("signature.png")
+        st.write("签名已保存成功！")
diff --git a/test.db b/test.db
new file mode 100644
index 0000000000000000000000000000000000000000..a74790c43b2a2f3fd3f6a19b7fd2c3f857c6c1c0
Binary files /dev/null and b/test.db differ