Hip joint activities can promote the synovial membrane metabolism and constantly produce synovial fluid, which is conducive to the repair and rebuilding of cartilage, the repair and shaping of the femoral head, and the improvement of hip function. Here are a few common hip exercise method: a, bed exercise method (1) hip extension and flexion activity exercise method: supine position, so that the joint extension, hands forked fingers together palm hold the lower end of the femur, the use of repeated elbow flexion force upward pull and active hip flexion activities combined, continuous activities for 5 to 10 minutes, the number of times the amplitude gradually increased. (2) Hip abduction straight leg raise activity exercise method: supine position, both lower limbs straight, hands on the side of the body, the affected limb abduction straight leg raise 25 ° ~ 35 °, for 1 minute to put down, for 10 times. Similarly, lateral and prone leg lifts can be done to exercise the lateral and posterior muscle groups. (3) Hip abduction and adduction activities: bend both knees about 90 degrees, shoulder width apart, and perform knee abduction and adduction exercises for 5-10 minutes (Figure 3) (4) Hip external rotation and internal rotation exercises: supine position, both lower limbs straight, hands on the side of the body, feet apart, equal to the shoulders, and perform lower limb external rotation and internal rotation activities for 5-10 minutes with the heel as the axis. (5) hip flexion position external rotation, internal rotation activities exercise method: supine position, make the knee joint flexion 100 °, hip flexion 90 °, hands on the knee, using the wrist strength repeatedly for external rotation, internal rotation activities, for 5 to 10 minutes,. (6) Kneeling abduction flexion and extension hip activity exercise method: take kneeling position, separate both knees as far as possible, support the upper body with both upper limbs straight, fix the knee joint, make back and forth movement of the body, flex and extend the hip joint. (3 months after surgery to start) Second, under the bed exercise method (1) support squatting method: single or two hands forward to hold the fixed object, body upright, feet apart, equal to shoulder width, slowly squatting and then pick up, repeatedly 3 to 5 minutes. (Starting six months after surgery) (2) affected limb swing method: single or double hand forward or side hold the fixation, stand with one foot weighted, affected limb forward flexion and backward extension inward and abduction swing for 3 to 5 minutes. (Starting six months after surgery) (3) Internal and external rotation method: holding the fixation with one hand, extending one foot slightly forward and outward, with the foot following the ground, making internal and external rotation movements for 3 to 5 minutes. (Starting six months after surgery) (4) Hip flexion method: the patient is sitting on the edge of the bed or on a chair with both lower limbs separated; the affected limb is repeatedly flexing the knee and hip for 3 to 5 minutes. (5) Knee hugging method: the patient is sitting on the edge of the bed, sofa, chair, both lower limbs are separated, hands hugging the affected limb under the knee repeatedly flexion elbow back and pull with active hip flexion movement, increase the hip flexion force and amplitude (6) Open law: sitting on the chair, stool, hip, knee and ankle joints are each at an angle of 90 °, feet together, with the tip of both feet as the axis of the double knee abduction, inward movement, mainly abduction 3 to 5 minutes. (7) pedal activity method: sit steadily on the special bicycle exercise equipment, such as pedal bicycle driving, speed up gradually, activities for 10 to 20 minutes.