//中划线 NSDictionary *attribtDic = @{NSStrikethroughStyleAttributeName: [NSNumber numberWithInteger:NSUnderlineStyleSingle]}; NSMutableAttributedString *attribtStr = [[NSMutableAttributedString alloc]initWithString:@"内容" attributes:attribtDic]; label.attributedText = attribtStr; //下划线 NSDictionary *attribtDic = @{NSUnderlineStyleAttributeName: [NSNumber numberWithInteger:NSUnderlineStyleSingle]}; NSMutableAttributedString *attribtStr = [[NSMutableAttributedString alloc]initWithString:@"内容" attributes:attribtDic]; label.attributedText = attribtStr;