”Many parents of children with a squint often tell us that their child is always looking to one side. It is commonly known as “crooked neck” and can be divided into two types, congenital and acquired, mostly the former. Acquired squint is caused by the baby sleeping and the mother nursing in one direction. Congenital lordosis is a common disease in which the sternocleidomastoid muscle on one side has fibrosis contracture, resulting in persistent head tilt to the affected side, neck twisting, and face and jaw deviation to the healthy side, with an incidence of about 0.3 to 1.3%. The cause of the disease has not yet been determined, but most believe that it is related to intrauterine malposition, myofibrosis, or a combination of factors. In children with congenital oblique neck, there is usually a prismatic or oval-shaped swelling or hard mass on the affected side of the neck a few days after birth, or in mild cases, it may be a soft mass or a thickening of the striae. It increases rapidly in the first 10 days of life and reaches its maximum size by 20 days. It is rarely, if ever, turned to the affected side, but often goes unnoticed or unnoticed by parents. Over time, the mass may slowly mechanically contract or disappear in the body. If left untreated, as the child grows older, it can lead to: asymmetry and deformity of the head and face; smaller eyes on the affected side than on the healthy side, or even strabismus; limited movement of the spine and neck; and in severe cases, compensatory curvature of the thoracolumbar spine. If the disease is not treated in time during childhood, it will cause permanent deformity. This disease is not uncommon in clinical practice, and most of them can be completely cured by conservative treatment if detected and treated early. Those who are older than 1 year old, have significant sternocleidomastoid contracture, and the effect of conservative treatment is not obvious, must be treated by surgery. However, fixation and habit correction after surgery, and facial recovery of the deformity are difficult problems. Many parents and some medical professionals lack a certain understanding of the condition, which has delayed the diagnosis or treatment of a considerable number of children with squint, causing serious consequences to their physical and mental health: permanent facial, neck and spinal deformities and a series of psychological problems caused by them. Therefore, those who are found or suspected of having a strabismus should be rehabilitated as soon as possible.