diff --git a/CustomKeyboard/View/KBStreamTextView.m b/CustomKeyboard/View/KBStreamTextView.m
index 502a961..96ea75e 100644
--- a/CustomKeyboard/View/KBStreamTextView.m
+++ b/CustomKeyboard/View/KBStreamTextView.m
@@ -346,10 +346,28 @@ static inline NSString *KBTrimRight(NSString *s) {
     if (ivc) {
         id<UITextDocumentProxy> proxy = ivc.textDocumentProxy;
         if ([proxy conformsToProtocol:@protocol(UITextDocumentProxy)]) {
-            NSString *context = proxy.documentContextBeforeInput ?: @"";
-            for (NSUInteger i = 0; i < context.length; i++) {
-                [proxy deleteBackward];
+            // 若用户把光标放在中间，需要同时删掉光标前后的内容再插入分片
+            BOOL canAdjustCaret = [proxy respondsToSelector:@selector(adjustTextPositionByCharacterOffset:)];
+            if (canAdjustCaret) {
+                NSString *contextAfter = proxy.documentContextAfterInput ?: @"";
+                while (contextAfter.length > 0) {
+                    NSInteger offset = (NSInteger)contextAfter.length;
+                    [proxy adjustTextPositionByCharacterOffset:offset];
+                    for (NSUInteger i = 0; i < contextAfter.length; i++) {
+                        [proxy deleteBackward];
+                    }
+                    contextAfter = proxy.documentContextAfterInput ?: @"";
+                }
             }
+
+            NSString *contextBefore = proxy.documentContextBeforeInput ?: @"";
+            while (contextBefore.length > 0) {
+                for (NSUInteger i = 0; i < contextBefore.length; i++) {
+                    [proxy deleteBackward];
+                }
+                contextBefore = proxy.documentContextBeforeInput ?: @"";
+            }
+
             if (rawText.length > 0) {
                 [proxy insertText:rawText];
             }
diff --git a/keyBoard/Class/Guard/V/KBGuideKFCell.m b/keyBoard/Class/Guard/V/KBGuideKFCell.m
index 1925e35..4f11bc6 100644
--- a/keyBoard/Class/Guard/V/KBGuideKFCell.m
+++ b/keyBoard/Class/Guard/V/KBGuideKFCell.m
@@ -14,8 +14,8 @@
 @implementation KBGuideKFCell
 
 - (void)setupUI {
-    self.contentView.backgroundColor = [UIColor colorWithWhite:0.96 alpha:1.0];
-
+    self.contentView.backgroundColor = [UIColor clearColor];
+    self.backgroundColor = [UIColor clearColor];
     [self.contentView addSubview:self.avatarImageView];
     [self.avatarImageView mas_makeConstraints:^(MASConstraintMaker *make) {
         make.left.equalTo(self.contentView).offset(16);
diff --git a/keyBoard/Class/Guard/V/KBGuideUserCell.m b/keyBoard/Class/Guard/V/KBGuideUserCell.m
index e6277cb..95d8f17 100644
--- a/keyBoard/Class/Guard/V/KBGuideUserCell.m
+++ b/keyBoard/Class/Guard/V/KBGuideUserCell.m
@@ -16,7 +16,9 @@
 @implementation KBGuideUserCell
 
 - (void)setupUI {
-    self.contentView.backgroundColor = [UIColor colorWithWhite:0.96 alpha:1.0];
+    self.contentView.backgroundColor = [UIColor clearColor];
+    self.backgroundColor = [UIColor clearColor];
+
 
     [self.contentView addSubview:self.avatarImageView];
     [self.avatarImageView mas_makeConstraints:^(MASConstraintMaker *make) {
diff --git a/keyBoard/Class/Search/V/KBSearchBarView.m b/keyBoard/Class/Search/V/KBSearchBarView.m
index 8b133df..c941dc3 100644
--- a/keyBoard/Class/Search/V/KBSearchBarView.m
+++ b/keyBoard/Class/Search/V/KBSearchBarView.m
@@ -35,8 +35,8 @@
 
     [self.searchButton mas_makeConstraints:^(MASConstraintMaker *make) {
         make.centerY.equalTo(self.bgView);
-        make.right.equalTo(self.bgView).offset(-8);
-        make.width.mas_greaterThanOrEqualTo(84);
+        make.right.equalTo(self.bgView).offset(-4);
+        make.width.mas_equalTo(84);
         make.height.mas_equalTo(32);
     }];