Abstract： Objective To investigate and compare the physical fitness status between the navy divers and aviators,who stayed in the sanatoriun for refreshment,and also to explore the differences in the physical fitness of different naval special service personnel.Methods Physical fitness tests were performed by using the methods specified in the " National Physical Measurement Standards Handbook ".Results In the morphological indicators such as height and body mass index (BMI),the average height of the naval aviators was 174.23 cm,which was significantly superior to that of the divers (169.33 cm),and statistical significance could be seen when comparisons were made between them (P ＜ 0.05).In the test of body function index,the vital capacity test results of the aviators (4 334.04 ml) were apparently better than those of the divers (4 105.04 ml),and statistical significance could be noted when comparisons were made between them (P ＜0.01).Step test results of the aviators were also superior to those of the divers,also with statistical significance (P ＜0.05).In such physical fitness indicators as jumping and systemic reactions,the test results of the aviators were also significantly superior to those of the divers,and statistical significance could be found when comparisons were made between them (P ＜ 0.001).However,there was no statistical significance in other physical fitness indicators.Conclusions The physical fitness test results of the naval aviators were on the whole good.To improve the health status of the divers,physical fitness training should be intensified for divers.