This paper briefly introduces the important role on the study of the effectiveness evaluation of one-to-one fighter's combat , and discusses the system composition and operating principle in hardware in-the-loop simulation on the effectiveness evaluation of one-to-one fighter's combat by ground flight simulator in laboratory condition. Then some technical problems have been studied in detail: (1) the design on simulation program of one-to-one fighter's combat; (2)the calculation of probability for airborne radar to discover objects; c3 )modeling of th巳attack zone of air-to-air missile; (4)evaluating and analyzing of result of air combat.