在網站SEO優化工作中，外鏈的作用不言而喻，優質的外鏈可以為網站帶來很好的優化效果。如果沒有建設必要的外鏈，那么搜索引擎可能就無法快速識別你的網站，因此SEO優化和外鏈的關系非常密切。那么，常見的外鏈建設方法有哪些呢？

In website SEO optimization work, outside the chain effect is self-evident, high-quality outside the chain can bring very good optimization effect for website. If there is no construction necessary outside the chain, then the search engine may be unable to quickly identify your website, so SEO optimization and outer chain very closely. So, what are common outside the chain construction method? 

　　第一，在自己網站建設外鏈

First, in his own construction site outside the chain 

　　對于沒有PR值，收錄也不理想的新站來說，想要找友情鏈接是很不容易的。因此，新站可以先在自己的網站做幾個鏈接，在PR值有所提升、收錄也比較正常之后，再開始做友情鏈接。

For no PR values, the collection is not ideal new stations, it is not easy to want to look for links. New sites, therefore, to do some link on his website, the PR value increased, included are normal, then start to do link. 

　　第二，在論壇博客下面留言

Second, in the BBS blog comments below 

　　在一些論壇和博客的下面加上自己的網站地址也是最常見的外部鏈接方法，但是不能一味地發鏈接，首先需要先到論壇發言，并提出有建設性的觀點和意見，這樣才會吸引別人的關注，后面發鏈接也會比較簡單。要不很容易被刪帖。

In some BBS and blogs with your website address below which is the most common method of external links, but not blindly send links, first need to speak to the BBS, and put forward constructive views and opinions, this will attract the attention of others, the link will be relatively simple. Otherwise it is easy to delete. 

　　第三，檢查競爭對手的外鏈

Third, the inspection for the chain of the competition 

　　"知己知彼才能百戰不殆"，分析競爭對手網站的外部鏈接建設情況對于我們自己來說非常重要，一些很強的競爭對手往往有成百上千的外鏈，我們可以利用一定的技術把競爭對手的外鏈都看一遍，找到其中的好來源，如果我們能把競爭對手所具備的外鏈也都得到，再加上其他渠道獲得的競爭對手沒有的外部鏈接，那么我們網站的排名與流量必定會超越競爭對手。

"Enemy and know yourself an argument," analysis of competitors website construction of external links is very important for our own, some very strong competitors often have hundreds of thousands of outer chain, we can use a certain technology to rival the outer chain look again, find a good source of, if we can put the competitors also have been outside of the chain, plus other sources of competitors without external links, so our site's ranking and traffic will surpass competitors.