diff --git a/agents-flex-core/src/main/java/com/agentsflex/core/document/DocumentSplitter.java b/agents-flex-core/src/main/java/com/agentsflex/core/document/DocumentSplitter.java
new file mode 100644
index 0000000..5d9853d
--- /dev/null
+++ b/agents-flex-core/src/main/java/com/agentsflex/core/document/DocumentSplitter.java
@@ -0,0 +1,41 @@
+/*
+ *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package com.agentsflex.core.document;
+
+import com.agentsflex.core.document.id.DocumentIdGenerator;
+
+import java.util.Collections;
+import java.util.List;
+
+import static java.util.stream.Collectors.toList;
+
+public interface DocumentSplitter {
+
+    List<Document> split(Document text, DocumentIdGenerator idGenerator);
+
+    default List<Document> split(Document text) {
+        return split(text, null);
+    }
+
+    default List<Document> splitAll(List<Document> documents, DocumentIdGenerator idGenerator) {
+        if (documents == null || documents.isEmpty()) {
+            return Collections.emptyList();
+        }
+        return documents.stream()
+            .flatMap(document -> split(document, idGenerator).stream())
+            .collect(toList());
+    }
+}