Most of the legs of newborn babies are curved, which is a normal physiological phenomenon. Before the newborn is not born, due to the small space of the uterus, in order to be able to develop better, the fetus is curled legs, thighs close to the abdomen posture, resulting in the birth of the newborn baby’s legs seem to be curved, in fact, this is a normal physiological phenomenon. It is recommended that parents do not because the newborn’s legs are bent to the newborn’s own leg binding, or playing candle package, that is, straighten all the baby’s limbs, wrapped in a quilt, the outside of the rope tied tightly. Tying legs or playing candle packs easily cause newborn hip dysplasia, growing up walking leg pain, or even limp, leaving lifelong disabilities. Remind parents, if the newborn’s leg bends a lot, or found that the left and right leg asymmetry, we should consult a doctor in time to find out the cause of the disease to give symptomatic treatment to ensure that the newborn’s normal growth and development.