The basic property of an antenna is to transmit and receive energy signal in one/all direction. This fundamental property is directivity. While antenna designing an antenna, this is the most important factor that counts for an antenna performance. Hence, its optimization is always given importance. There are so many processes available that are used for optimization of an antenna pattern yet no one out of them provides satisfactorily results by reducing all noise parameters. Depending upon, there are a number of experimentation tools and theories available to optimize the antenna array design , however at timeswith manual approach they becomes complicated and time consuming. In this paper Moth Flame optimization (MFO) based for antenna array is illustrated.