Infrared imaging fuze of air-air missiles has been studied in the world just for a short time. Theories of fuze that how to image, how to process image and how to recognize target are imperfect now. An air-air missile infrared imaging fuze that shares some components of FLIR imaging seeker, such as FPA sensors and optical systems, is proposed. The remarkable characteristic of this fuze is the integration of guidance and fuzing. It has the functions of sorting targets, selecting aiming pointting and hitting unsubstantial place relating to aiming point. A fuzing control algorithm is addressed and some results of computer simulation are presented.