diff --git a/OpenIMSDK/Model/OIMGroupInfo.h b/OpenIMSDK/Model/OIMGroupInfo.h
index 93953fe..1dfd0bd 100644
--- a/OpenIMSDK/Model/OIMGroupInfo.h
+++ b/OpenIMSDK/Model/OIMGroupInfo.h
@@ -21,7 +21,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface OIMGroupCreateInfo : OIMGroupBaseInfo
 
-@property (nonatomic, assign) NSInteger groupType;
+@property (nonatomic, assign) OIMGroupType groupType;
 
 @end
 
diff --git a/OpenIMSDK/Utils/OIMModelDefine.h b/OpenIMSDK/Utils/OIMModelDefine.h
index 8f712b2..fc94045 100644
--- a/OpenIMSDK/Utils/OIMModelDefine.h
+++ b/OpenIMSDK/Utils/OIMModelDefine.h
@@ -138,4 +138,11 @@ typedef NS_ENUM(NSInteger,  OIMGroupVerificationType) {
     OIMGroupVerificationTypeDirectly = 2,                               /// 直接进群
 };
 
+/**
+ 群类型
+ */
+typedef NS_ENUM(NSInteger, OIMGroupType) {
+    OIMGroupTypeNormal,     /// 普通群
+    OIMGroupTypeWorking,    /// 工作群
+};
 #endif /* OIMModelDefine_h */