Adults’ feet flare inward for a variety of reasons and should be treated accordingly. Common causes include hip dysplasia, inversion of the knee, and clubfoot. Commonly used treatment methods such as general treatment, physical therapy, surgical treatment. 1. Hip dysplasia: mostly caused by congenital factors, generally the smaller the treatment effect is better. The effect of conservative treatment for adults is poor, and can be treated by surgery, such as hip joint replacement. 2. Knee internal rotation: mostly caused by the imbalance of bone growth in childhood, mild asymptomatic people do not need treatment, avoid strenuous exercise, exercise the muscle strength of the lower limbs, avoid obesity. Available external fixation frame fixed treatment, surgery is commonly used minimally invasive surgical steel plate internal fixation treatment. 3. Horseshoe foot: better treatment in childhood, adults massage, infrared and other physical therapy methods are less effective, can be corrected by limb orthotics, severe cases can be treated surgically. Adults may have other reasons such as trauma, etc., if the continuation of the child from childhood, the general effect of conservative treatment is poor, the complexity of the surgical treatment process, generally active in childhood treatment.