在网站SEO优化工作中，外链的作用不言而喻，优质的外链可以为网站带来很好的优化效果。如果没有建设必要的外链，那么搜索引擎可能就无法快速识别你的网站，因此SEO优化和外链的关系非常密切。那么，常见的外链建设方法有哪些呢？

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，在自己网站建设外链

First, in his own construction site outside the chain 

　　对于没有PR值，收录也不理想的新站来说，想要找友情链接是很不容易的。因此，新站可以先在自己的网站做几个链接，在PR值有所提升、收录也比较正常之后，再开始做友情链接。

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，在论坛博客下面留言

Second, in the BBS blog comments below 

　　在一些论坛和博客的下面加上自己的网站地址也是最常见的外部链接方法，但是不能一味地发链接，首先需要先到论坛发言，并提出有建设性的观点和意见，这样才会吸引别人的关注，后面发链接也会比较简单。要不很容易被删帖。

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，检查竞争对手的外链

Third, the inspection for the chain of the competition 

　　"知己知彼才能百战不殆"，分析竞争对手网站的外部链接建设情况对于我们自己来说非常重要，一些很强的竞争对手往往有成百上千的外链，我们可以利用一定的技术把竞争对手的外链都看一遍，找到其中的好来源，如果我们能把竞争对手所具备的外链也都得到，再加上其他渠道获得的竞争对手没有的外部链接，那么我们网站的排名与流量必定会超越竞争对手。

"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.