Crooked buttocks are mainly asymmetrical tilting of the hips, which may be associated with conditions such as congenital hip dislocation, gluteal myoclonus, and scoliosis deformity. 1. Congenital hip dislocation: it is mostly seen in the pediatric group and is mainly caused by congenital developmental abnormalities. After birth, the affected children may have the manifestation of hip tilt asymmetry. It is necessary to go to the hospital as early as possible, and the lesion can be diagnosed through physical examination and X-ray, CT and other examination programs. Conservative treatment is mainly used to correct the patient’s condition by means of bracing, splint fixation and plaster immobilization. For patients with particularly serious conditions, surgery can also be considered. 2. Gluteal muscle contracture: due to genetic, congenital developmental abnormality, muscle injection, trauma and infection, etc., resulting in gluteal muscle contracture, can also appear in the case of asymmetric tilt of the buttocks. It is necessary for patients to go to the hospital for correction, to clarify the type and cause of the lesion, and then targeted treatment. 3. Scoliosis: It is related to congenital developmental abnormality, trauma and tumor in the later stage, which can also induce asymmetric tilting of the buttocks after the onset of the disease. It is necessary to clarify whether there is spinal cord injury through CT, MRI and other examination programs, and then carry out conservative treatment or surgical treatment. If you have “crooked buttocks”, you need to be alert to the disease and seek medical treatment promptly if necessary.