diff --git a/package.json b/package.json
index 33805c9..37c5adb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "n6-ui",
-  "version": "1.2.6",
+  "version": "1.2.7",
   "description": "N6 Network UI Framework",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -80,4 +80,4 @@
     "tailwindcss": "^3.4.16",
     "zustand": "^5.0.2"
   }
-}
\ No newline at end of file
+}
diff --git a/src/NDropdown/NDropdown.tsx b/src/NDropdown/NDropdown.tsx
index ad36742..af28311 100644
--- a/src/NDropdown/NDropdown.tsx
+++ b/src/NDropdown/NDropdown.tsx
@@ -7,14 +7,22 @@ interface NDropdownOption {
 
 interface NDropdownProps {
   options: NDropdownOption[];
-  placeholder?: string;
+  defaultValue?: NDropdownOption;
   onSelect: (selected: NDropdownOption) => void;
   className?: string; // 支持传入自定义样式
 }
 
-const NDropdown: React.FC<NDropdownProps> = ({ options, placeholder = 'Select an option', onSelect, className }) => {
+const NDropdown: React.FC<NDropdownProps> = ({
+  options,
+  defaultValue = {
+    value: 'select',
+    label: 'Select an option',
+  },
+  onSelect,
+  className,
+}) => {
   const [isOpen, setIsOpen] = useState(false);
-  const [selectedOption, setSelectedOption] = useState<NDropdownOption | null>(null);
+  const [selectedOption, setSelectedOption] = useState<NDropdownOption>(defaultValue);
   const dropdownRef = useRef<HTMLDivElement>(null);
 
   const handleOptionClick = (option: NDropdownOption) => {
@@ -42,7 +50,7 @@ const NDropdown: React.FC<NDropdownProps> = ({ options, placeholder = 'Select an
         onClick={() => setIsOpen(!isOpen)}
         className="bg-white flex w-full justify-center px-4 py-2 text-left shadow-sm"
       >
-        <span>{selectedOption?.label || placeholder}</span>
+        <span>{selectedOption?.label}</span>
         <span className={`ml-2 transform transition-transform duration-300 ${isOpen ? 'rotate-180' : 'rotate-0'}`}>
           <NDropdownIcon />
         </span>