diff --git a/abstract/shard_strategy.go b/abstract/shard_strategy.go
new file mode 100644
index 0000000..26535ed
--- /dev/null
+++ b/abstract/shard_strategy.go
@@ -0,0 +1,16 @@
+// Package abstract ...
+//
+// Description : abstract ...
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 2025-06-21 15:20
+package abstract
+
+// IShardStrategy 自定义数据分片策略
+type IShardStrategy interface {
+	// ShardField 按照哪些字段分表
+	ShardField() []string
+	// Calculate 计算分片值
+	Calculate(inputData map[string]any) (int, error)
+}