diff --git a/certificate.html b/certificate.html
index 9bd00ba..0e93a08 100644
--- a/certificate.html
+++ b/certificate.html
@@ -446,7 +446,7 @@
         </div>
         <div class="form-group">
           <label for="date">开具日期：</label>
-          <input type="datetime-local" id="date" name="date" required>
+          <input type="date" id="date" name="date" required>
         </div>
           <div class="form-group">
             <label>手写签名：</label>
@@ -709,25 +709,16 @@
       });
     });
     
-    // 设置日期时间输入框的默认值和最大值
+    // 设置日期输入框的默认值和最大值
     function setupDateInput() {
       const dateInput = document.getElementById('date');
       if (dateInput) {
-        // 获取当前时间，格式为YYYY-MM-DDTHH:MM:SS
-        const now = new Date();
-        // 格式化时间，确保秒数正确
-        const year = now.getFullYear();
-        const month = String(now.getMonth() + 1).padStart(2, '0');
-        const day = String(now.getDate()).padStart(2, '0');
-        const hours = String(now.getHours()).padStart(2, '0');
-        const minutes = String(now.getMinutes()).padStart(2, '0');
-        const seconds = String(now.getSeconds()).padStart(2, '0');
-        const formattedNow = `${year}-${month}-${day}T${hours}:${minutes}:${seconds}`;
-        
-        // 设置默认值为当前时间
-        dateInput.value = formattedNow;
-        // 设置最大值为当前时间，只能选择当前时间或之前的时间
-        dateInput.max = formattedNow;
+        // 获取当前日期，格式为YYYY-MM-DD
+        const today = new Date().toISOString().split('T')[0];
+        // 设置默认值为今天
+        dateInput.value = today;
+        // 设置最大值为今天，只能选择今天或之前的日期
+        dateInput.max = today;
       }
     }
 
diff --git a/server.js b/server.js
index 54b2747..e2d5b57 100644
--- a/server.js
+++ b/server.js
@@ -81,10 +81,11 @@ const server = http.createServer(async (req, res) => {
     try {
       // 从数据库获取最新的合格证信息
       const [rows] = await pool.execute(
-        'SELECT company as subjectName, phoneNumber as contact, productName, grossWeight as weight, commitBasis as basis, origin, DATE_FORMAT(issueDate, "%Y-%m-%d") as date, signature FROM certificate ORDER BY id DESC LIMIT 1'
+        'SELECT company as subjectName, phoneNumber as contact, productName, grossWeight as weight, commitBasis as basis, origin, issueDate, DATE_FORMAT(issueDate, "%Y-%m-%d") as date, signature FROM certificate ORDER BY id DESC LIMIT 1'
       );
       
       const certificate = rows.length > 0 ? rows[0] : null;
+      console.log('从数据库获取的最新合格证信息:', certificate);
       
       // 返回成功响应
       res.writeHead(200, { 
@@ -119,6 +120,10 @@ const server = http.createServer(async (req, res) => {
         try {
           // 解析表单数据
           const formData = new URLSearchParams(body);
+          // 使用当前的北京时间（精确到秒）作为开具日期
+          const now = new Date();
+          const beijingTime = new Date(now.getTime() + 8 * 60 * 60 * 1000); // 转换为北京时间
+          
           const certificate = {
             subjectName: formData.get('subjectName'),
             contact: formData.get('contact'),
@@ -126,7 +131,7 @@ const server = http.createServer(async (req, res) => {
             weight: formData.get('weight'),
             basis: formData.get('basis'),
             origin: formData.get('origin'),
-            date: formData.get('date'),
+            date: beijingTime,
             signature: formData.get('signature')
           };
           
@@ -137,7 +142,7 @@ const server = http.createServer(async (req, res) => {
             weight: certificate.weight,
             basis: certificate.basis,
             origin: certificate.origin,
-            date: certificate.date,
+            date: certificate.date.toISOString(),
             hasSignature: !!certificate.signature
           });