Asymmetrical leg lines in infants may be related to normal physiological phenomenon, congenital hip dislocation, femoral head dysplasia, etc. Conservative and surgical treatments may be prescribed to improve the symptoms. 1. Normal physiological phenomenon: asymmetry of leg lines in infants may be a normal physiological phenomenon related to congenital development. If there is no clinical symptom and it does not affect the aesthetics, it can be left untreated for the time being, and regular review is enough. 2. Congenital hip dislocation: If the leg lines are asymmetrical due to congenital hip dislocation, you need to cooperate with the doctor to receive surgical treatment to improve the situation of hip dislocation. 3. Dysplasia of the femoral head: Some infants may have dysplasia of the femoral head. If the condition is more serious, it may need to receive surgical treatment or use a brace to correct it. Parents are advised to take their children to the pediatrician of the hospital in time to identify the specific cause of the asymmetry of the infant’s leg lines and receive treatment for the specific cause.