The symptoms of developmental hip dislocation are different in infancy and childhood. In the neonatal period and infancy, attentive parents may notice abnormalities in the appearance of the child’s lower limbs. For example, the thighs and calves are asymmetrical and have different heights. The inguinal folds are also asymmetrical, with one side being shorter or disappearing; the buttock folds are also different, i.e., one side is elevated or there is an extra one, and the buttock is wider on one side. Secondly, some parents may find that the child’s lower limbs do not move asymmetrically. For example, one side of the hip abduction is not open, one side of the lower limbs is shortened, the range of motion is small, and the affected limbs may be located in a mildly externally rotated position when lying down. If there is a family history of hip dislocation, or a history of breech birth, the child should be suspected of having a hip dislocation. Symptoms become more pronounced in early childhood, and the most common reasons for presentation are unsteady gait, shortening of one lower limb, limping gait, ducking or waddling gait. In the standing position, the pelvis can be found high on one side and low on the other, with a distended abdomen, anterior protrusion of the lumbar vertebrae of the spine, and a pronounced posterior tilt of the hips. In the lying position, it can be found that the child’s lower limbs are unequal in length, bilateral hip asymmetry, and widening of the perineum and pubic area. Of course, bilateral hip joint dislocation at the same time may be lower limbs are equal in length, the buttocks may also be symmetrical, but the gait must be abnormal. If parents and friends find their children have the above symptoms, do not delay, must take the child to the regular hospital in time, if the foreign patients to find me for consultation can first apply for online referral service, you can also choose to telephone consultation and my one-on-one communication.