diff --git a/AVOS/LeanCloudObjcTests/BaseTestCase.swift b/AVOS/LeanCloudObjcTests/BaseTestCase.swift
index 3424bcb7..8470c4e5 100644
--- a/AVOS/LeanCloudObjcTests/BaseTestCase.swift
+++ b/AVOS/LeanCloudObjcTests/BaseTestCase.swift
@@ -69,6 +69,11 @@ class BaseTestCase: XCTestCase {
         super.tearDown()
     }
     
+    override func setUp() {
+        super.setUp()
+        LCUser.logOut()
+    }
+    
     override func tearDown() {
         LCUser.logOut()
         super.tearDown()
diff --git a/AVOS/LeanCloudObjcTests/LCUserTestCase.swift b/AVOS/LeanCloudObjcTests/LCUserTestCase.swift
index 32330792..cfa60cfe 100644
--- a/AVOS/LeanCloudObjcTests/LCUserTestCase.swift
+++ b/AVOS/LeanCloudObjcTests/LCUserTestCase.swift
@@ -330,4 +330,46 @@ class LCUserTestCase: BaseTestCase {
             }
         }
     }
+    
+    func testStrictlyFind() {
+        expecting { exp in
+            LCUser.loginAnonymously { user, error in
+                XCTAssertNotNil(user)
+                XCTAssertNil(error)
+                exp.fulfill()
+            }
+        }
+        guard let user = LCUser.current() else {
+            XCTFail()
+            return
+        }
+        let hiddenField = "hiddenField"
+        let exposedField = "exposedField"
+        user[hiddenField] = uuid
+        user[exposedField] = uuid
+        XCTAssertTrue(user.save())
+        
+        expecting { exp in
+            let query = LCQuery()
+            query.whereKey(hiddenField, equalTo: user[hiddenField] ?? "")
+            LCUser.strictlyFind(with: query) { users, error in
+                XCTAssertTrue(Thread.isMainThread)
+                XCTAssertNil(users)
+                XCTAssertNotNil(error)
+                exp.fulfill()
+            }
+        }
+        
+        expecting { exp in
+            let query = LCQuery()
+            query.whereKey(exposedField, equalTo: user[exposedField] ?? "")
+            LCUser.strictlyFind(with: query) { users, error in
+                XCTAssertTrue(Thread.isMainThread)
+                XCTAssertEqual(users?.count, 1)
+                XCTAssertEqual(users?.first?.objectId, user.objectId)
+                XCTAssertNil(error)
+                exp.fulfill()
+            }
+        }
+    }
 }
diff --git a/AVOS/Sources/Foundation/Query/LCQuery.m b/AVOS/Sources/Foundation/Query/LCQuery.m
index be7c5705..733ab30e 100644
--- a/AVOS/Sources/Foundation/Query/LCQuery.m
+++ b/AVOS/Sources/Foundation/Query/LCQuery.m
@@ -1012,39 +1012,30 @@ + (NSDictionary *)dictionaryFromIncludeKeys:(NSArray *)array {
 
 - (NSMutableDictionary *)assembleParameters {
     [self.parameters removeAllObjects];
-
-    if ([self.where allKeys].count > 0)
-    {
+    if (self.where.count > 0) {
         [self.parameters setObject:[self whereString] forKey:@"where"];
     }
-
-    if (self.limit > 0)
-    {
+    if (self.limit > 0) {
         [self.parameters setObject:@(self.limit) forKey:@"limit"];
     }
-    if (self.skip > 0)
-    {
+    if (self.skip > 0) {
         [self.parameters setObject:@(self.skip) forKey:@"skip"];
     }
-    if (self.order.length > 0)
-    {
+    if (self.order.length > 0) {
         [self.parameters setObject:self.order forKey:@"order"];
     }
-    if (self.include.count > 0)
-    {
-        NSString * myIncludes = [[self.include allObjects] componentsJoinedByString:@","];
-        [self.parameters setObject:myIncludes forKey:@"include"];
+    if (self.include.count > 0) {
+        NSString *includes = [[self.include allObjects] componentsJoinedByString:@","];
+        [self.parameters setObject:includes forKey:@"include"];
     }
-    if (self.selectedKeys.count > 0)
-    {
-        NSString * keys = [[self.selectedKeys allObjects] componentsJoinedByString:@","];
+    if (self.selectedKeys.count > 0) {
+        NSString *keys = [[self.selectedKeys allObjects] componentsJoinedByString:@","];
         [self.parameters setObject:keys forKey:@"keys"];
     }
-    if (self.includeACL)
-    {
+    if (self.includeACL) {
         [self.parameters setObject:@"true" forKey:@"returnACL"];
     }
-    if ([self.extraParameters allKeys].count > 0) {
+    if (self.extraParameters.count > 0) {
         [self.parameters addEntriesFromDictionary:self.extraParameters];
     }
     return self.parameters;
diff --git a/AVOS/Sources/Foundation/Query/LCQuery_Internal.h b/AVOS/Sources/Foundation/Query/LCQuery_Internal.h
index e08ec882..c4bf3cd1 100644
--- a/AVOS/Sources/Foundation/Query/LCQuery_Internal.h
+++ b/AVOS/Sources/Foundation/Query/LCQuery_Internal.h
@@ -14,7 +14,7 @@
 @property (nonatomic) NSMutableSet<NSString *> *selectedKeys;
 @property (nonatomic, strong) NSMutableDictionary *extraParameters;
 
-- (NSDictionary *)assembleParameters;
+- (NSMutableDictionary *)assembleParameters;
 + (NSDictionary *)dictionaryFromIncludeKeys:(NSArray *)array;
 - (NSString *)queryPath;
 -(void)queryWithBlock:(NSString *)path
diff --git a/AVOS/Sources/Foundation/User/LCUser.h b/AVOS/Sources/Foundation/User/LCUser.h
index 5b7be566..800cbd9d 100644
--- a/AVOS/Sources/Foundation/User/LCUser.h
+++ b/AVOS/Sources/Foundation/User/LCUser.h
@@ -500,6 +500,15 @@ FOUNDATION_EXPORT LeanCloudSocialPlatform const LeanCloudSocialPlatformWeiXin;
  */
 - (BOOL)isAnonymous;
 
+// MARK: Strictly Find
+
+/// More restrictive on query conditions to find user.
+/// Constraints: NOT support `skip`; NOT support the protected fields; NOT support `inQuery` ...
+/// @param query The query conditions.
+/// @param callback Result callback.
++ (void)strictlyFindWithQuery:(LCQuery *)query
+                     callback:(void (^)(NSArray<LCUser *> * _Nullable users, NSError * _Nullable error))callback;
+
 @end
 
 /**
diff --git a/AVOS/Sources/Foundation/User/LCUser.m b/AVOS/Sources/Foundation/User/LCUser.m
index 85a4d34c..f3c11ed2 100644
--- a/AVOS/Sources/Foundation/User/LCUser.m
+++ b/AVOS/Sources/Foundation/User/LCUser.m
@@ -6,7 +6,7 @@
 #import "LCObject_Internal.h"
 #import "LCPaasClient.h"
 #import "LCUtils_Internal.h"
-#import "LCQuery.h"
+#import "LCQuery_Internal.h"
 #import "LCPersistenceUtils.h"
 #import "LCObjectUtils.h"
 #import "LCPaasClient.h"
@@ -1191,6 +1191,30 @@ - (BOOL)isAnonymous
     return [[self linkedServiceNames] containsObject:anonymousTag];
 }
 
+// MARK: Strictly Find
+
++ (void)strictlyFindWithQuery:(LCQuery *)query
+                     callback:(void (^)(NSArray<LCUser *> * _Nullable, NSError * _Nullable))callback
+{
+    [[LCPaasClient sharedInstance] getObject:@"users/strictlyQuery"
+                              withParameters:[query assembleParameters]
+                                       block:^(id  _Nullable object, NSError * _Nullable error) {
+        NSMutableArray<LCUser *> *users;
+        if (!error && [NSDictionary _lc_isTypeOf:object]) {
+            NSArray *results = [NSArray _lc_decoding:object key:@"results"];
+            users = [NSMutableArray arrayWithCapacity:results.count];
+            for (NSDictionary *dictionary in results) {
+                if ([NSDictionary _lc_isTypeOf:dictionary]) {
+                    LCUser *user = (LCUser *)[LCObjectUtils lcObjectForClass:[LCUser userTag]];
+                    [LCObjectUtils copyDictionary:dictionary toObject:user];
+                    [users addObject:user];
+                }
+            }
+        }
+        [LCUtils callArrayResultBlock:callback array:users error:error];
+    }];
+}
+
 #pragma mark - Override from LCObject
 
 /**