网站中途更换服务器对网站收录的影响肯定是有的，如果更换的快，能及时上架，以前收录的页面应该不会掉，但是百度蜘蛛有可能不会造访了，因为ip变了。又要对百度蜘蛛重新引导，让它重新造访。

最好的解决办法是利用301转向
把网站换到新服务器上 不要修改域名的DNS 而是把域名转向到你现在空间一段时间，然后再修改域名解析。

Web site on the server received influence must be some, if the change, can timely shelving of the page before it should not be a hundred times, but the spiders may not be visited because ip changed. and to reboot hundred degrees of spiders and allow it to visit. the best solution is to change the site of 301 to the new server will not change the domain of dns it to you now turn to the international space for a period of time and then modify the domain name resolver