In this paper, a conical missile-borne array antenna is proposed which is consisted of three single frequencyantennas and a dual-frequency antenna.The antenna could resist high temperature and have a wide beam .The simulated results showthat the gain of array is achieved 2.dB,the AR of array antenna is less than 3.dB, the beam of antenna is achieved 95°, and couldreceive the stable signal in the rotating process.