Hi Venkatasivarao,
Are you saying your certification has already expired? A certification needs to be renewed before it has expired. Once it has expired you need to re-take the exam(s).
Please ask your question in the Microsoft Certification forum using link below. There are support moderators over there that will respond to your question in 1 business day and can assist with renewal questions:
https://trainingsupport.microsoft.com/en-us/newthread?threadtype=Questions&forum=mcp
Please click Accept Answer if above was helpful.
Thanks.
-TP