Slanting neck, also known as neck deviation to one side, can be divided into congenital and acquired, as described below: a. Congenital is generally a developmental abnormality that leads to congenital unilateral contracture of the sternocleidomastoid muscle, resulting in asymmetry of the head and neck, thus deviating to the affected side. The treatment is divided into conservative treatment and surgical treatment. Conservative treatment is posture correction, manipulation, massage and local physiotherapy, while wearing a neck orthosis, and surgical treatment is to cut off or partially remove the sternal head and clavicular head of the contracted sternocleidomastoid muscle, which should be formulated with the actual situation of the patient. Second, acquired oblique neck is mostly caused by diseases or other factors, no previous oblique neck, such as after trauma, after neck surgery, tumor factors, etc. can lead to. If it is caused by trauma, the etiology is clear, and the treatment plan needs to be selected in combination with the patient’s injury. If it is caused by neck surgery, this situation is generally caused by damage to the sternocleidomastoid muscle, and if conservative treatment is ineffective, it needs to be treated by surgery again.