Due to fast advancement in wireless communication technology, use of small size antenna has rapidly increased. Not only has the size of the antenna had its cost, performance, eased of installation everything have been taken care while designing the antenna. To meet this entire requirement micro-strip antenna is proposed. Now-a-days, micro-strip antennas are used in many places such as aircrafts, spacecraft’s, satellite and missile applications. In this paper, the authors discuss the micro-strip antenna, types of micro-strip antenna, various substrates used for designing the antenna and the literature survey which they have done.