This paper aims to study the changes in body composition and symmetry of female young trainees during military basic physical training,and provide a basis for daily training.Methods:Using literature review,experimental methods,and mathematical statistics,25 healthy female subjects were subjected to military basic physical fitness for a period of 4 months,and body composition testing was performed using a dual energy X-ray bone density meter.Results:(1)The bone area,bone mineral content,and bone density of the right arm were significantly higherthan those of the left arm(P<0.05);(2)But the fat content andpercentage inthe right arm were significantly lower than those in the left arm(P>0.05);(3)The muscle content and overall weight of the right arm were significantly higher than those of the left arm(P<0.01).(4)There was no significant difference in bone area,bone mineral content,bone density,fat content,muscle content,and fat percentage between the left and right lower limbs(P>0.05).(5)In terms of the distribution of overall Z-score,2 to-1 accounts for 64%,-1 to-2 accounts for 28%,and<-2 accounts for 8%.Conclusion:During the basic physical training period,there are differences in the upper limb components among female students,while there are no differences in the lower limb components.Overall,the symmetry is good,but the overall Z-score is at medium and high risk,indicating a low availability of energy.It is suggested to fully optimize training and nutrition programs to maintain and improve bone health.