diff --git a/api/src/main/java/com/theokanning/openai/assistants/assistant/AutoChunkingStrategy.java b/api/src/main/java/com/theokanning/openai/assistants/assistant/AutoChunkingStrategy.java
new file mode 100644
index 0000000..01f76be
--- /dev/null
+++ b/api/src/main/java/com/theokanning/openai/assistants/assistant/AutoChunkingStrategy.java
@@ -0,0 +1,15 @@
+package com.theokanning.openai.assistants.assistant;
+
+import lombok.Data;
+
+/**
+ * @author LiangTao
+ * @date 2024年06月05 10:57
+ **/
+@Data
+public class AutoChunkingStrategy implements ChunkingStrategy {
+    public static final AutoChunkingStrategy instance = new AutoChunkingStrategy();
+
+    private final String type = "auto";
+
+}
diff --git a/api/src/main/java/com/theokanning/openai/assistants/assistant/ChunkingStrategy.java b/api/src/main/java/com/theokanning/openai/assistants/assistant/ChunkingStrategy.java
new file mode 100644
index 0000000..aceb751
--- /dev/null
+++ b/api/src/main/java/com/theokanning/openai/assistants/assistant/ChunkingStrategy.java
@@ -0,0 +1,18 @@
+package com.theokanning.openai.assistants.assistant;
+
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+
+/**
+ * @author LiangTao
+ * @date 2024年06月05 10:56
+ **/
+@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type")
+@JsonSubTypes({
+        @JsonSubTypes.Type(value = AutoChunkingStrategy.class, name = "auto"),
+        @JsonSubTypes.Type(value = StaticChunkingStrategy.class, name = "static"),
+})
+public interface ChunkingStrategy {
+    String getType();
+
+}
diff --git a/api/src/main/java/com/theokanning/openai/assistants/assistant/Static.java b/api/src/main/java/com/theokanning/openai/assistants/assistant/Static.java
new file mode 100644
index 0000000..d95f52b
--- /dev/null
+++ b/api/src/main/java/com/theokanning/openai/assistants/assistant/Static.java
@@ -0,0 +1,7 @@
+package com.theokanning.openai.assistants.assistant;
+
+/**
+ * @author LiangTao
+ * @date 2024年06月05 11:00
+ **/
+
diff --git a/api/src/main/java/com/theokanning/openai/assistants/assistant/StaticChunkingStrategy.java b/api/src/main/java/com/theokanning/openai/assistants/assistant/StaticChunkingStrategy.java
new file mode 100644
index 0000000..e83bd05
--- /dev/null
+++ b/api/src/main/java/com/theokanning/openai/assistants/assistant/StaticChunkingStrategy.java
@@ -0,0 +1,44 @@
+package com.theokanning.openai.assistants.assistant;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.Data;
+
+/**
+ * @author LiangTao
+ * @date 2024年06月05 10:59
+ **/
+@Data
+public class StaticChunkingStrategy implements ChunkingStrategy {
+    private final String type = "static";
+
+    @JsonProperty("static")
+    private Static aStatic;
+
+    public static StaticChunkingStrategy of(Integer maxChunkSizeTokens, Integer chunkOverlapTokens) {
+        StaticChunkingStrategy staticChunkingStrategy = new StaticChunkingStrategy();
+        Static aStatic = new Static();
+        aStatic.setMaxChunkSizeTokens(maxChunkSizeTokens);
+        aStatic.setChunkOverlapTokens(chunkOverlapTokens);
+        staticChunkingStrategy.setAStatic(aStatic);
+        return staticChunkingStrategy;
+    }
+
+
+    @Data
+    public static class Static {
+        /**
+         * The maximum number of tokens in each chunk. The default value is 800. The minimum value is 100 and the maximum value is 4096.
+         */
+        @JsonProperty("max_chunk_size_tokens")
+        private Integer maxChunkSizeTokens;
+
+        /**
+         * The number of tokens that overlap between chunks. The default value is 400.
+         * <p>
+         * Note that the overlap must not exceed half of max_chunk_size_tokens.
+         */
+        @JsonProperty("chunk_overlap_tokens")
+        private Integer chunkOverlapTokens;
+
+    }
+}
diff --git a/api/src/main/java/com/theokanning/openai/assistants/assistant/VectorStoreFileRequest.java b/api/src/main/java/com/theokanning/openai/assistants/assistant/VectorStoreFileRequest.java
index aa9aeff..ac12709 100644
--- a/api/src/main/java/com/theokanning/openai/assistants/assistant/VectorStoreFileRequest.java
+++ b/api/src/main/java/com/theokanning/openai/assistants/assistant/VectorStoreFileRequest.java
@@ -14,4 +14,8 @@ public class VectorStoreFileRequest {
 
     @JsonProperty("file_id")
     String fileId;
+
+    @JsonProperty("chunking_strategy")
+    ChunkingStrategy chunkingStrategy;
+
 }
diff --git a/api/src/test/resources/assistants/VectorStoreFileRequest.json b/api/src/test/resources/assistants/VectorStoreFileRequest.json
index c27841a..130dcd0 100644
--- a/api/src/test/resources/assistants/VectorStoreFileRequest.json
+++ b/api/src/test/resources/assistants/VectorStoreFileRequest.json
@@ -1,3 +1,10 @@
 {
-  "file_id": "file-abc123"
+  "file_id": "fileid_here",
+  "chunking_strategy": {
+    "type": "static",
+    "static": {
+      "max_chunk_size_tokens": 800,
+      "chunk_overlap_tokens": 400
+    }
+  }
 }