diff --git a/app/routers/web.py b/app/routers/web.py
index 7767853..e97328c 100644
--- a/app/routers/web.py
+++ b/app/routers/web.py
@@ -139,6 +139,15 @@ def profile_delete(profile_id: int, user: User = Depends(get_current_user_web),
     return _redirect("/profiles")
 
 
+@router.post("/profiles/{profile_id}/rename")
+def profile_rename(profile_id: int, nickname: str = Form(...), user: User = Depends(get_current_user_web), db: Session = Depends(get_db)):
+    p = db.query(Profile).filter(Profile.id == profile_id, Profile.user_id == user.id).first()
+    if p:
+        p.nickname = nickname
+        db.commit()
+    return _redirect("/profiles")
+
+
 # ---------- Postcards ----------
 
 @router.get("/profiles/{profile_id}/postcards", response_class=HTMLResponse)
diff --git a/app/static/style.css b/app/static/style.css
index 76ba0b5..72c485d 100644
--- a/app/static/style.css
+++ b/app/static/style.css
@@ -53,6 +53,8 @@ input[type="text"] + label, input[type="password"] + label, input[type="datetime
 .form-row .btn { white-space: nowrap; flex-shrink: 0; }
 .filter-bar .form-row select { flex: 0 0 auto; width: auto; }
 .inline-form { margin-bottom: 1.25rem; }
+.rename-form { display: inline-flex; gap: .35rem; align-items: center; margin-right: .5rem; }
+.rename-form input[type="text"] { width: 120px; flex: none; }
 
 /* Buttons */
 .btn { display: inline-block; padding: .5rem 1rem; border: 1px solid var(--border); border-radius: 6px; background: #fff; cursor: pointer; font-size: .9rem; text-align: center; white-space: nowrap; }
diff --git a/app/templates/postcard_form.html b/app/templates/postcard_form.html
index 20945d3..fb2a7e1 100644
--- a/app/templates/postcard_form.html
+++ b/app/templates/postcard_form.html
@@ -9,28 +9,28 @@
     <input type="text" name="card_number" value="{{ postcard.card_number if postcard else '' }}" required pattern="[A-Za-z]{2}-\d{7}" title="两个字母 + 短横线 + 7位数字（如 AB-1234567）">
 
     <label>状态 *</label>
-    <select name="status" id="status-select" onchange="toggleFields()">
+    <select name="status" id="status-select" onchange="toggleFields()" required>
         <option value="sent" {% if postcard and postcard.status=='sent' %}selected{% endif %}>已寄出</option>
         <option value="delivered" {% if postcard and postcard.status=='delivered' %}selected{% endif %}>已送达</option>
         <option value="received" {% if postcard and postcard.status=='received' %}selected{% endif %}>已收到</option>
     </select>
 
     <div id="fields-sent-delivered">
-        <label>收件人</label>
-        <input type="text" name="recipient_name" value="{{ postcard.recipient_name if postcard else '' }}">
-        <label>国家/地区</label>
-        <input type="text" name="country" value="{{ postcard.country if postcard else '' }}" pattern="[A-Z]{2}" title="两个大写字母（如 JP、US）" maxlength="2" style="width:80px;text-transform:uppercase">
-        <label>寄出时间</label>
-        <input type="date" name="send_time" value="{{ postcard.send_time.strftime('%Y-%m-%d') if postcard and postcard.send_time else '' }}">
-        <label>到达时间</label>
-        <input type="date" name="arrival_time" value="{{ postcard.arrival_time.strftime('%Y-%m-%d') if postcard and postcard.arrival_time else '' }}">
+        <label>收件人 *</label>
+        <input type="text" name="recipient_name" value="{{ postcard.recipient_name if postcard else '' }}" required>
+        <label>国家/地区 *</label>
+        <input type="text" name="country" value="{{ postcard.country if postcard else '' }}" required pattern="[A-Z]{2}" title="两个大写字母（如 JP、US）" maxlength="2" style="width:80px;text-transform:uppercase">
+        <label>寄出时间 *</label>
+        <input type="date" name="send_time" value="{{ postcard.send_time.strftime('%Y-%m-%d') if postcard and postcard.send_time else '' }}" required>
+        <label>到达时间 *</label>
+        <input type="date" name="arrival_time" value="{{ postcard.arrival_time.strftime('%Y-%m-%d') if postcard and postcard.arrival_time else '' }}" required>
     </div>
 
     <div id="fields-received" style="display:none">
-        <label>发件人</label>
-        <input type="text" name="sender_name" value="{{ postcard.sender_name if postcard else '' }}">
-        <label>收到时间</label>
-        <input type="date" name="receive_time" value="{{ postcard.receive_time.strftime('%Y-%m-%d') if postcard and postcard.receive_time else '' }}">
+        <label>发件人 *</label>
+        <input type="text" name="sender_name" value="{{ postcard.sender_name if postcard else '' }}" required>
+        <label>收到时间 *</label>
+        <input type="date" name="receive_time" value="{{ postcard.receive_time.strftime('%Y-%m-%d') if postcard and postcard.receive_time else '' }}" required>
     </div>
 
     <div class="form-actions">
@@ -41,8 +41,10 @@
 <script>
 function toggleFields() {
     var s = document.getElementById('status-select').value;
-    document.getElementById('fields-sent-delivered').style.display = (s === 'received') ? 'none' : '';
-    document.getElementById('fields-received').style.display = (s === 'received') ? '' : 'none';
+    var sd = document.getElementById('fields-sent-delivered');
+    var rc = document.getElementById('fields-received');
+    sd.style.display = (s === 'received') ? 'none' : '';
+    rc.style.display = (s === 'received') ? '' : 'none';
 }
 toggleFields();
 </script>
diff --git a/app/templates/profiles.html b/app/templates/profiles.html
index 575a93c..beaf5c3 100644
--- a/app/templates/profiles.html
+++ b/app/templates/profiles.html
@@ -19,6 +19,10 @@
             <td><a href="/profiles/{{ p.id }}/postcards">{{ p.nickname }}</a></td>
             <td>{{ p.created_at.strftime('%Y-%m-%d %H:%M') }}</td>
             <td>
+                <form method="post" action="/profiles/{{ p.id }}/rename" class="inline rename-form">
+                    <input type="text" name="nickname" value="{{ p.nickname }}" required>
+                    <button type="submit" class="btn btn-sm">改名</button>
+                </form>
                 <form method="post" action="/profiles/{{ p.id }}/delete" class="inline">
                     <button type="submit" class="btn btn-danger btn-sm" onclick="return confirm('确定删除该 Profile 及其所有明信片？')">删除</button>
                 </form>