diff --git a/CustomKeyboard/View/KBFunctionView.m b/CustomKeyboard/View/KBFunctionView.m
index 605636d..1996698 100644
--- a/CustomKeyboard/View/KBFunctionView.m
+++ b/CustomKeyboard/View/KBFunctionView.m
@@ -34,6 +34,12 @@ static NSString * const kKBFunctionTagCellId = @"KBFunctionTagCellId";
 // 临时：点击标签后展示的“流式文本视图”与其删除按钮
 @property (nonatomic, strong, nullable) KBStreamTextView *streamTextView;
 @property (nonatomic, strong, nullable) UIButton *streamDeleteButton;
+// 流式测试数据 & 定时器
+@property (nonatomic, strong, nullable) NSTimer *streamMockTimer;
+@property (nonatomic, strong, nullable) NSArray<NSString *> *streamMockChunks;
+@property (nonatomic, assign) NSInteger streamMockIndex;
+@property (nonatomic, copy, nullable) NSString *streamMockSource; // 连续文本源（包含 \t 作为分段）
+@property (nonatomic, assign) NSInteger streamMockCursor;         // 当前光标位置
 
 // Data
 @property (nonatomic, strong) NSArray<NSString *> *itemsInternal;
@@ -73,6 +79,7 @@ static NSString * const kKBFunctionTagCellId = @"KBFunctionTagCellId";
 
 - (void)dealloc {
     [self stopPasteboardMonitor];
+    [self kb_stopMockStreaming];
     [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
 
@@ -204,7 +211,7 @@ static NSString * const kKBFunctionTagCellId = @"KBFunctionTagCellId";
     [self addSubview:sv];
     [sv mas_makeConstraints:^(MASConstraintMaker *make) {
         make.left.equalTo(self.mas_left).offset(12);
-        make.right.equalTo(self).offset(-12);
+        make.right.equalTo(self.rightButtonContainer.mas_left).offset(-12);
         make.top.equalTo(self.pasteViewInternal.mas_bottom).offset(10);
         make.bottom.equalTo(self.mas_bottom).offset(-10);
     }];
@@ -226,10 +233,14 @@ static NSString * const kKBFunctionTagCellId = @"KBFunctionTagCellId";
         make.width.mas_greaterThanOrEqualTo(56);
     }];
     self.streamDeleteButton = del;
+
+    // 启动模拟“后端流”数据，用于查看 KBStreamTextView 展示效果
+    [self kb_startMockStreamingWithSeed:title];
 }
 
 - (void)kb_onTapStreamDelete {
     // 关闭并销毁流式视图，恢复标签列表
+    [self kb_stopMockStreaming];
     [self.streamDeleteButton removeFromSuperview];
     self.streamDeleteButton = nil;
     [self.streamTextView removeFromSuperview];
@@ -237,6 +248,56 @@ static NSString * const kKBFunctionTagCellId = @"KBFunctionTagCellId";
     self.collectionViewInternal.hidden = NO;
 }
 
+#pragma mark - Mock Streaming
+
+// 生成并按时间片推送模拟流数据到 KBStreamTextView
+- (void)kb_startMockStreamingWithSeed:(NSString *)seedTitle {
+    [self kb_stopMockStreaming];
+
+    // 连续文本源（包含 \t 作为“分段”分隔符；\n 为换行），按 1~3 字随机切片推送
+    NSString *t = seedTitle ?: @"高情商";
+    self.streamMockSource = [NSString stringWithFormat:
+        @"选择了标签：%@\n"
+         "下面演示流式输出，每隔一小段时间来一截。第一段结束。\t"
+         "第二段开始：这是一个较长的句子，会被拆成多个小块推送，直到遇到分隔符就换段。\n第二段结束。\t"
+         "最后一段：右上角可随时关闭展示。\n演示完成。\t",
+        t];
+    self.streamMockCursor = 0;
+    self.streamMockChunks = nil; // 废弃数组方式
+    self.streamMockIndex = 0;
+
+    // 定时喂数据（主线程）：每次随机 1~3 个字
+    __weak typeof(self) weakSelf = self;
+    self.streamMockTimer = [NSTimer scheduledTimerWithTimeInterval:0.20 repeats:YES block:^(NSTimer * _Nonnull timer) {
+        __strong typeof(weakSelf) self = weakSelf; if (!self) { [timer invalidate]; return; }
+        if (!self.streamTextView) { [timer invalidate]; return; }
+        NSInteger total = (NSInteger)self.streamMockSource.length;
+        if (self.streamMockCursor >= total) {
+            // 结束：收尾裁剪当前段
+            [self.streamTextView finishStreaming];
+            [timer invalidate];
+            self.streamMockTimer = nil;
+            return;
+        }
+        // 随机 1~3 个字（不跨越结尾），逐段追加
+        uint32_t step = arc4random_uniform(3) + 1; // 1..3
+        NSInteger remain = total - self.streamMockCursor;
+        NSInteger take = MIN((NSInteger)step, remain);
+        NSString *piece = [self.streamMockSource substringWithRange:NSMakeRange(self.streamMockCursor, take)];
+        self.streamMockCursor += take;
+        [self.streamTextView appendStreamText:piece ?: @""];
+    }];
+}
+
+- (void)kb_stopMockStreaming {
+    [self.streamMockTimer invalidate];
+    self.streamMockTimer = nil;
+    self.streamMockChunks = nil;
+    self.streamMockIndex = 0;
+    self.streamMockSource = nil;
+    self.streamMockCursor = 0;
+}
+
 // 用户点击功能标签：优先 UL 拉起主App，失败再 Scheme；两次都失败则提示开启完全访问。
 // 若已开启“完全访问”，则直接在键盘侧创建 KBStreamTextView，并在其右上角提供删除按钮关闭。
 - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
diff --git a/CustomKeyboard/View/KBStreamTextView.m b/CustomKeyboard/View/KBStreamTextView.m
index 43647ab..156f4fa 100644
--- a/CustomKeyboard/View/KBStreamTextView.m
+++ b/CustomKeyboard/View/KBStreamTextView.m
@@ -8,6 +8,7 @@
 //
 
 #import "KBStreamTextView.h"
+#import "KBResponderUtils.h" // 通过响应链找到 UIInputViewController，并将文本输出到宿主
 
 @interface KBStreamTextView ()
 
@@ -170,7 +171,7 @@
     label.textColor = self.labelTextColor;
     label.userInteractionEnabled = YES;
     label.text = @"";
-
+    label.backgroundColor = [UIColor redColor];
     UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleLabelTap:)];
     [label addGestureRecognizer:tap];
 
@@ -256,8 +257,19 @@
     UILabel *label = (UILabel *)tap.view;
     if (![label isKindOfClass:[UILabel class]]) { return; }
     NSInteger index = [self.labels indexOfObject:label];
+    NSString *text = label.text ?: @"";
     if (index != NSNotFound && self.onLabelTap) {
-        self.onLabelTap(index, label.text ?: @"");
+        self.onLabelTap(index, text);
+    }
+
+    // 将文本发送到当前宿主应用的输入框（搜索框/TextView 等）
+    // 注：键盘扩展无需“完全访问”也可 insertText:
+    UIInputViewController *ivc = KBFindInputViewController(self);
+    if (ivc) {
+        id<UITextDocumentProxy> proxy = ivc.textDocumentProxy;
+        if (text.length > 0 && [proxy conformsToProtocol:@protocol(UITextDocumentProxy)]) {
+            [proxy insertText:text];
+        }
     }
 }