diff --git a/error.go b/error.go
new file mode 100644
index 0000000..b79e0c8
--- /dev/null
+++ b/error.go
@@ -0,0 +1,17 @@
+// Package task ...
+//
+// Description : 内置的错误信息
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 2023-08-04 11:50
+package task
+
+import "errors"
+
+var (
+	// ErrDuplicateTaskKey 任务key重复
+	ErrDuplicateTaskKey = errors.New("duplicate task key")
+	// ErrTaskKeyNotFound 任务key不存在
+	ErrTaskKeyNotFound = errors.New("task key doesn't existed in task list, please check your input")
+)