Abstract: In order to study the changing extent and tendency of the pilot dimensions of different times/districts/plane-types,5~13 dimension values were obtained by measuring 656 pilots, and those of the 70s' were as controls, difference between the data of different districts/plane-types was analyzed. It was shown that 12 of the 13 dimension values were significantly different from those of the 70s' (p<0.01); there was no significant difference in stature between each 2 districts of all 6 districts and in body weight in most cases (p>0.05), the body weight of fighter pilots is different from that of other pilots. There have been significant changes in the fighter pilot dimensions, and 70s' data should not be used as bases of the design of aircraft and personal protective and survival equipment. Pilots should do regular exercises and the food should be controlled in order that pilots could maintain their dimensions. New pilot dimension database and anthropometric model should be set up. It is necessary to control some dimensions of volunteers when recruiting pilots in different districts.