今日热文：Canonical标签是什么，它在SEO的应用！2024/5/19

情非得已

　　自从SEO这个行业出现以来，优化人员就在试图掌握搜索引擎排名的各种影响因子，但遗憾的是，没有任何一个专业的人士能够给出一份标准的答案，所有的策略，都依靠以往的实践经验总结而来。

　　其中，Canonical标签是众多专家一直研究讨论的对象，它对规范化网址有着积极的作用。

　　简单理解：Canonical是一个网址规范化的标签，它用于告知搜索引擎，该页面的内容所对应的唯一网址是什么，大量具有相同标题的URL，如果被成功收录，往往导致内部竞争，这并不利于主URL的排名，rel=“canonical”营运而生，最大作用就是避免大量重复内容的产生，它早期应用于谷歌SEO，而后逐渐被百度采用。

　　Canonical标签常见的表现形式为：

　　<linkrel=“canonical”href=https://www.batmanit.com/p/“URL地址”/>

　　跨域Canonical标签是一种高级SEO的策略，用于在高权重站点，利用rel=“canonical”标注目标URL，从而为目标URL快速获取权重的方法。

　　言外之意就是如果我将


https://www.dazhong.com/hospital/sitemap
https://www.dazhong.com/hospital/sitemap_disease
https://www.dazhong.com/hospital/sitemap_disease_doctor
https://www.dazhong.com/hospital/sitemap_doctor
https://m.dazhong.com/hospital/sitemap
https://m.dazhong.com/hospital/sitemap_disease
https://m.dazhong.com/hospital/sitemap_disease_doctor
https://m.dazhong.com/hospital/sitemap_doctor
https://m.dazhong.com/hefei/disease_wiki/recommend_hospital_3844
https://www.dazhong.com/haerbin/disease_wiki/recommend_hospital_237
https://m.dazhong.com/wuhan/disease_wiki/recommend_hospital_839
https://m.dazhong.com/hangzhou/disease_wiki/recommend_hospital_828
https://m.dazhong.com/xining/disease_wiki/recommend_hospital_1
https://m.dazhong.com/haerbin/disease_wiki/recommend_hospital_8253
https://m.dazhong.com/changsha/disease_wiki/recommend_hospital_815
https://www.dazhong.com/nanning/disease_wiki/recommend_hospital_2924
https://m.dazhong.com/hhhts/disease_wiki/recommend_hospital_4860
https://www.dazhong.com/lanzhou/disease_wiki/recommend_hospital_8267
https://m.dazhong.com/nanjing/disease_wiki/recommend_hospital_2986
https://www.dazhong.com/hhhts/disease_wiki/recommend_hospital_4523
https://m.dazhong.com/xian/disease_wiki/recommend_hospital_5976
https://m.dazhong.com/fuzhou/disease_wiki/recommend_hospital_5141
https://www.dazhong.com/guangzhou/disease_wiki/recommend_hospital_464
https://m.dazhong.com/taiyuan/disease_wiki/recommend_hospital_8583
https://m.dazhong.com/hangzhou/disease_wiki/recommend_hospital_1261
https://www.dazhong.com/jinan3/disease_wiki/recommend_hospital_1316
https://m.dazhong.com/nanchang/disease_wiki/recommend_hospital_2805
https://www.dazhong.com/taiyuan/disease_wiki/recommend_hospital_7611
https://m.dazhong.com/changchun/disease_wiki/recommend_hospital_7836
https://m.dazhong.com/changchun/disease_wiki/recommend_hospital_8729
https://m.dazhong.com/kunming/disease_wiki/recommend_hospital_9232
https://www.dazhong.com/changsha/disease_wiki/recommend_hospital_8864
https://www.dazhong.com/hefei/disease_wiki/recommend_hospital_7119
https://m.dazhong.com/xining/disease_wiki/recommend_hospital_7890
https://m.dazhong.com/hangzhou/disease_wiki/recommend_hospital_1252
https://www.dazhong.com/xining/disease_wiki/recommend_hospital_8440
https://www.dazhong.com/hhhts/disease_wiki/recommend_hospital_1987
https://www.dazhong.com/guangzhou/disease_wiki/recommend_hospital_8959
https://m.dazhong.com/nanning/disease_wiki/recommend_hospital_2467
https://m.dazhong.com/hefei/disease_wiki/recommend_hospital_5308
https://m.dazhong.com/guangzhou/disease_wiki/recommend_hospital_6459
https://www.dazhong.com/yinchuan/disease_wiki/recommend_hospital_7117
https://www.dazhong.com/nanchang/disease_wiki/recommend_hospital_4428
https://www.dazhong.com/guiyang2/disease_wiki/recommend_hospital_7710
https://m.dazhong.com/changchun/disease_wiki/recommend_hospital_5172
https://m.dazhong.com/taiyuan/disease_wiki/recommend_hospital_7059
https://m.dazhong.com/xian/disease_wiki/recommend_hospital_6209
https://m.dazhong.com/yinchuan/disease_wiki/recommend_hospital_920
https://www.dazhong.com/haikou/disease_wiki/recommend_hospital_3896
https://www.dazhong.com/hefei/disease_wiki/recommend_hospital_2403