Adversary can be able to perform selective forgery where valid signature on message are created by someone else, with a significant probability and existential forgery, in which a pair of message and valid signature is created by him. For a signature scheme to be perfectly secured, it should be secured computationally. We present an ID based multiple signatures scheme secure against selective forgery attack based on ECC. The objective of the work carried out is to design and implement multi digital signature based on ECC against selective forgery attack.