Sub domain information

if i redirect my domain to subdomain so get any issue in search engine?

 

that really depends. with 301 permanent redirection, you do lose some pagerank in the process. sometimes you lose some ranking for the time being as well. you can do 301 redirection where you do not have any other choice or your existing page/site has nothing to lose. if your site has ranking and pagerank, then you need to plan out your redirection before doing that