diff --git a/src/utils/constant.ts b/src/utils/constant.ts
new file mode 100644
index 0000000..1543511
--- /dev/null
+++ b/src/utils/constant.ts
@@ -0,0 +1,44 @@
+// 默认股票名称常量
+export const DEFAULT_NUMBER = 0;
+export const DEFAULT_STRING = "---";
+
+// 默认错误提示常量
+export const ERROR_API_CODE = "请检查股票代码是否正确";
+export const ERROR_COMMON_CODE = "请检查统一代码是否正确";
+
+export const ERROR_UNDEFINED_GET_STOCK = "未实现获取股票数据";
+export const ERROR_UNDEFINED_GET_STOCKS = "未实现获取股票数据组";
+export const ERROR_UNDEFINED_SEARCH_STOCK = "未实现搜索股票代码";
+
+export const ERROR_UNDEFINED_COMMON_CODE = "未实现统一代码转换股票代码";
+export const ERROR_UNDEFINED_SZ_COMMON_CODE = "未实现深交所统一代码转换股票代码";
+export const ERROR_UNDEFINED_SH_COMMON_CODE = "未实现上交所统一代码转换股票代码";
+export const ERROR_UNDEFINED_HK_COMMON_CODE = "未实现港交所统一代码转换股票代码";
+export const ERROR_UNDEFINED_US_COMMON_CODE = "未实现美交所统一代码转换股票代码";
+
+export const ERROR_UNDEFINED_API_CODE = "未实现股票代码转换统一代码";
+export const ERROR_UNDEFINED_API_CODES = "未实现股票代码组转换统一代码组";
+export const ERROR_UNDEFINED_SZ_API_CODE = "未实现深交所股票代码转换统一代码";
+export const ERROR_UNDEFINED_SH_API_CODE = "未实现上交所股票代码转换统一代码";
+export const ERROR_UNDEFINED_HK_API_CODE = "未实现港交所股票代码转换统一代码";
+export const ERROR_UNDEFINED_US_API_CODE = "未实现美交所股票代码转换统一代码";
+
+export const ERROR_UNDEFINED_GET_CODE = '未实现获取代码';
+export const ERROR_UNDEFINED_GET_NAME = '未实现获取名称';
+export const ERROR_UNDEFINED_GET_NOW = '未实现获取现价';
+export const ERROR_UNDEFINED_GET_LOW = '未实现获取最低价';
+export const ERROR_UNDEFINED_GET_HIGH = '未实现获取最高价';
+export const ERROR_UNDEFINED_GET_PERCENT = '未实现获取涨跌';
+export const ERROR_UNDEFINED_GET_YESTERDAY = '未实现获取昨日收盘价';
+
+// 默认股票数据常量
+export const DEFAULT_STOCK = {
+  code: DEFAULT_STRING,
+  name: DEFAULT_STRING,
+  percent: DEFAULT_NUMBER,
+
+  now: DEFAULT_NUMBER,
+  low: DEFAULT_NUMBER,
+  high: DEFAULT_NUMBER,
+  yesterday: DEFAULT_NUMBER,
+};