The cause of asymmetrical leg lines in infants needs to be clarified first, if it is a physiological phenomenon, no correction is needed, if it is caused by disease, the disease needs to be treated and corrected. Normal infants and young children have a certain number of asymmetric skin tattoos, which is because the lower limbs of infants and young children are relatively short compared to adults and fat accumulation. Parents should go to the hospital for examination when they find bilateral asymmetry of leg lines in infants. If the muscle strength, muscle tone, hip abduction and internal rotation of the lower limbs are normal, there is no need to deal with it, and the bilateral asymmetry of leg lines will not adversely affect their growth and development. If congenital hip dysplasia is the cause of bilateral leg stripe asymmetry, it is necessary to actively cooperate with the treatment in order to correct the bilateral leg stripe asymmetry, otherwise the disease itself will have an impact on the normal growth and development of infants and young children. If congenital hip dysplasia may need to be treated with traction repositioning and other treatments according to the condition, the child will have walking pain or even become disabled, and the quality of life will be seriously affected.