diff --git a/ups_management/ups_manager/forms.py b/ups_management/ups_manager/forms.py
index e1b9961..972c203 100644
--- a/ups_management/ups_manager/forms.py
+++ b/ups_management/ups_manager/forms.py
@@ -6,10 +6,11 @@ from .models import UPSHost, Battery
 class UPSHostForm(forms.ModelForm):
     class Meta:
         model = UPSHost
-        fields = ['brand', 'model', 'ip_address', 'quantity', 'location', 'last_maintenance_date', 'contact']
+        fields = ['brand', 'model', 'serial_number', 'ip_address', 'quantity', 'location', 'last_maintenance_date', 'contact']
         labels = {
             'brand': '品牌',
             'model': '型号',
+            'serial_number': '序列号',
             'ip_address': 'IP地址',
             'quantity': '数量',
             'location': '存放位置',
@@ -19,6 +20,7 @@ class UPSHostForm(forms.ModelForm):
         widgets = {
             'brand': forms.TextInput(attrs={'class': 'form-control'}),
             'model': forms.TextInput(attrs={'class': 'form-control'}),
+            'serial_number': forms.TextInput(attrs={'class': 'form-control'}),
             'ip_address': forms.TextInput(attrs={'class': 'form-control'}),
             'quantity': forms.NumberInput(attrs={'class': 'form-control', 'min': '1'}),
             'location': forms.TextInput(attrs={'class': 'form-control'}),
diff --git a/ups_management/ups_manager/migrations/0006_upshost_serial_number.py b/ups_management/ups_manager/migrations/0006_upshost_serial_number.py
new file mode 100644
index 0000000..234acec
--- /dev/null
+++ b/ups_management/ups_manager/migrations/0006_upshost_serial_number.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.0.6 on 2026-05-18 05:37
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ups_manager', '0005_alter_upshost_ip_address'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='upshost',
+            name='serial_number',
+            field=models.CharField(blank=True, max_length=100, null=True, verbose_name='序列号'),
+        ),
+    ]
diff --git a/ups_management/ups_manager/models.py b/ups_management/ups_manager/models.py
index c5abdc2..52e9585 100644
--- a/ups_management/ups_manager/models.py
+++ b/ups_management/ups_manager/models.py
@@ -36,6 +36,7 @@ class Supplier(models.Model):
 class UPSHost(models.Model):
     brand = models.CharField(max_length=100, verbose_name='品牌')
     model = models.CharField(max_length=100, verbose_name='型号')
+    serial_number = models.CharField(max_length=100, blank=True, null=True, verbose_name='序列号')
     ip_address = models.CharField(max_length=50, blank=True, null=True, verbose_name='IP地址')
     quantity = models.IntegerField(default=1, verbose_name='数量')
     location = models.CharField(max_length=200, verbose_name='存放位置')
diff --git a/ups_management/ups_manager/templates/ups_manager/ups_form.html b/ups_management/ups_manager/templates/ups_manager/ups_form.html
index 0bb4b01..9b54e9a 100644
--- a/ups_management/ups_manager/templates/ups_manager/ups_form.html
+++ b/ups_management/ups_manager/templates/ups_manager/ups_form.html
@@ -40,6 +40,20 @@
                             </div>
                         </div>
                         
+                        <div class="col-md-6">
+                            <div class="form-group">
+                                <label for="{{ form.serial_number.id_for_label }}" class="form-label font-weight-semibold">
+                                    {{ form.serial_number.label }}
+                                </label>
+                                {{ form.serial_number }}
+                                {% if form.serial_number.errors %}
+                                    {% for error in form.serial_number.errors %}
+                                        <div class="invalid-feedback d-block">{{ error }}</div>
+                                    {% endfor %}
+                                {% endif %}
+                            </div>
+                        </div>
+                        
                         <div class="col-md-6">
                             <div class="form-group">
                                 <label for="{{ form.ip_address.id_for_label }}" class="form-label font-weight-semibold">
diff --git a/ups_management/ups_manager/templates/ups_manager/ups_list.html b/ups_management/ups_manager/templates/ups_manager/ups_list.html
index daa4d16..c7a1c1d 100644
--- a/ups_management/ups_manager/templates/ups_manager/ups_list.html
+++ b/ups_management/ups_manager/templates/ups_manager/ups_list.html
@@ -33,6 +33,7 @@
             <th>主机名称</th>
             <th>品牌</th>
             <th>型号</th>
+            <th>序列号</th>
             <th>IP地址</th>
             <th>数量</th>
             <th>存放位置</th>
@@ -49,6 +50,7 @@
             <td>{{ ups.brand }} {{ ups.model }}</td>
             <td>{{ ups.brand }}</td>
             <td>{{ ups.model }}</td>
+            <td>{{ ups.serial_number|default:"-" }}</td>
             <td>{{ ups.ip_address }}</td>
             <td>{{ ups.quantity }}</td>
             <td>{{ ups.location }}</td>
@@ -62,7 +64,7 @@
         </tr>
         {% empty %}
         <tr>
-            <td colspan="11" class="text-center text-muted">暂无UPS主机记录</td>
+            <td colspan="12" class="text-center text-muted">暂无UPS主机记录</td>
         </tr>
         {% endfor %}
     </tbody>