Baby’s leg lines one more and one less refers to the asymmetry in the number of leg lines, is a type of leg line asymmetry, general leg line asymmetry includes two forms: one is the number of asymmetry, refers to the baby’s two legs of the leg lines are not the same number of leg lines, one more and one less; the other is positional asymmetry, refers to the baby’s two legs of the same position of the leg lines are not the same height, the position is not symmetrical. For the problem of asymmetrical leg lines, the biggest worry of the moms and dads is the baby’s hip deformity or dysplasia. If the baby’s hip joint activity is not affected in any way, and the activity is free, no matter the asymmetry in the number of leg lines, or the position of the asymmetry, there is no relationship, the moms and dads do not need to be nervous, and normal life can be. However, if the child’s joint movement is restricted, the activities can not be free, it is recommended to go to the hospital to check the hip joint ultrasound or film to clarify, and give further targeted treatment.