The symptoms of strabismus are mainly due to the fibrous contracture of the sternocleidomastoid muscle on one side of the neck and the head and face wanting to be skewed deformity on the affected side. Usually after the birth of the baby, there is a mass on one side of the sternocleidomastoid muscle, which is hard, round or oval, and inactive. The head is tilted toward the affected side, the jaw is turned toward the healthy side, and active or passive jaw rotation toward the affected side is limited. With the development of the disease, the mass gradually disappeared, slowly formed a fibrous contracture of the strip, there are various secondary acute, the affected side of the face is short and flat, the healthy side is long and round, the eyes and ears are not in the same plane, and in severe cases, there can be cervical scoliosis deformity. If you suspect a strabismus, it is recommended to standardize the treatment in time to avoid delaying the condition.