diff --git a/src/components/firearm-form/index.tsx b/src/components/firearm-form/index.tsx
index 476218e..2095383 100644
--- a/src/components/firearm-form/index.tsx
+++ b/src/components/firearm-form/index.tsx
@@ -1,5 +1,6 @@
 import { Form, Input, InputNumber, Select } from "antd"
 import { AddFirearmRequest, FirearmType } from "@/types"
+import calibres from "@/constant/calibres.json"
 
 const firearmTypeText: Record<FirearmType, string> = {
   RIFLE: "步枪",
@@ -12,6 +13,11 @@ const firearmTypeText: Record<FirearmType, string> = {
   SPECIAL: "特殊",
 }
 
+const calibreOptions = calibres.map((calibre) => ({
+  value: calibre,
+  label: calibre,
+}))
+
 interface FirearmFormProps {
   form: ReturnType<typeof Form.useForm<AddFirearmRequest>>[0]
   onFinish: (values: AddFirearmRequest) => void
@@ -53,9 +59,14 @@ export default function FirearmForm({ form, onFinish }: FirearmFormProps) {
       <Form.Item<AddFirearmRequest>
         name="calibre"
         label="子弹口径"
-        rules={[{ required: true, message: "请输入子弹口径" }]}
+        rules={[{ required: true, message: "请选择子弹口径" }]}
       >
-        <Input placeholder="例如：5.56x45mm" />
+        <Select
+          placeholder="请选择子弹口径"
+          showSearch
+          optionFilterProp="label"
+          options={calibreOptions}
+        />
       </Form.Item>
 
       <Form.Item<AddFirearmRequest>
@@ -88,4 +99,3 @@ export default function FirearmForm({ form, onFinish }: FirearmFormProps) {
     </Form>
   )
 }
-
diff --git a/src/constant/calibres.json b/src/constant/calibres.json
new file mode 100644
index 0000000..b1f47ad
--- /dev/null
+++ b/src/constant/calibres.json
@@ -0,0 +1,23 @@
+[
+  ".338 Lap Mag",
+  ".357 Magnum",
+  ".45 ACP",
+  ".50 AE",
+  ".50 BMG",
+  "12 Gauge",
+  "12.7x55mm",
+  "5.45x39mm",
+  "5.56x45mm",
+  "5.7x28mm",
+  "5.8x42mm",
+  "6.8x51mm",
+  "7.62x39mm",
+  "7.62x51mm",
+  "7.62x54mm",
+  "9x19mm",
+  "9x39mm",
+  "4.6x30mm",
+  ".300 BLK",
+  "箭矢",
+  "45-70 Govt"
+]
\ No newline at end of file