Abstract: This article presents an air-to-surface antiradiation missile weapon system's efficiency calculation formula and on its basis it also analyses and the radar counter measure efficiency against the Antiradiation Missile. It mainly analyses the radar used anti-reconnaissance technology, the technology of warning and jamming to the antiradiation missile, the interception, hitting the target, survivability, and the operation efficiency of the bistatic radar technology and the counter-fire to the antiradiation missile.