NSString * htmlString = @"<html><body>今天中午<font size=\"13\" color=\"red\">去哪吃什么</font><font size=\"5\" color=\"blue\">？？？</font> </body></html>";
NSAttributedString * attrStr = [[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUnicodeStringEncoding] options:@{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType } documentAttributes:nil error:nil];
UILabel * myLabel = [[UILabel alloc] initWithFrame:self.view.bounds];
myLabel.attributedText = attrStr;
[self.view addSubview:myLabel];原文：http://blog.csdn.net/xiaopeng12300/article/details/45391199