Total hip arthroplasty (THA) is a surgical technique to treat hip diseases by implanting an artificial total hip prosthesis, and its surgical technique has become mature. Minimally invasive total hip arthroplasty is performed in our department to complete the total hip replacement within one or two incisions less than 250px or even shorter, and minimize the trauma to the soft tissues around the joint and the interference to the patient’s physiological function, and shorten the recovery time. Early rehabilitation exercise can improve and increase local blood circulation, increase muscle strength, prevent tendon and joint capsule adhesion and contracture, soften scars, and restore the function of joints and limbs. Please carry out the exercise under the guidance of our hospital’s doctors and nurses, and consult the competent doctor or return to the hospital for review if there is any discomfort during the exercise process! Postoperative day 1 1, quadriceps training: supine position, a soft pillow under the knee, active downward pressure on the knee joint, keep the thigh muscle contraction state for 10 seconds, relax, repeat 15 times/group, 3 groups/day 2, ankle dorsiflexion dorsiflexion exercise: supine position active maximum flexion and extension of the ankle joint. 30 times/group, 6 groups/day. 3, hip contraction exercise: supine leg extension position, upper limbs comfortably placed on the side of the body, do contraction movement, contraction of the hip muscles to hold 10 seconds, relax, repeat 20 times / group, 3 groups / day. 4, supine hip flexion exercise: in the heel does not leave the bed, and does not cause abnormal pain in the case of hip flexion. Prohibit internal retraction and internal rotation. The angle depends on the patient’s condition (less than 90°). Second, postoperative day 2-3 1, repeat the above exercise. 2, supine position affected limb adduction and abduction exercise: repeat 15 times/group, 2~3 groups/day 3, from prone position to semi-prone position: swing the head of the bed up 90°, 30 minutes/times, 2~3 times/day. 3.4-6 days after operation 1.Repeat the above exercises. 2, supine position hip flexion and knee flexion exercise: flex the hip without the heel leaving the bed and without causing abnormal pain. Prohibit internal retraction and internal rotation. The angle depends on the patient’s condition (less than 90°). 10 times/group, 3 groups/day 4, 1 week – 4 weeks after surgery 1, lying to sitting position: sit up with both hands to support, flex the healthy leg and extend the affected leg, use both hands and the healthy leg to support the affected limb to the calf can be naturally draped over the side of the bed. 2.Sitting to standing position: use the support of the healthy leg and both hands to stand on the hip. 3, standing hip joint adduction, abduction, forward flexion, backward extension: the upper body is straight, feet and shoulder-width stand, toes are forward, hold a good fixed object healthy side of the single-leg stand, the affected leg to the inside and outside of the front and back, respectively, to do the adduction, abduction, forward flexion, backward extension movements, this exercise is mainly to strengthen the muscle strength of the muscles around the hip joint, to improve the ability to control the hip joint and stability. 3 times a day, three groups / times, 30 / group, the total amount of about 200-300 times per day. 3 times/day, 3 sets/time, 30 strokes/each set, total amount per day about 200-300 strokes. 4, stand to walk training: crutches, the healthy leg first forward, followed by the affected leg, crutches followed or at the same time, the affected leg from non-weight-bearing to partial weight-bearing. Gradually increase the weight bearing of the affected leg when there is no discomfort, and transition to full weight bearing. V. 1 month after surgery 1, the patient practiced squatting with the helpers to expand joint mobility. 2, up and down the stairs training upstairs: the healthy leg first on the affected leg, followed by crutches or at the same time; downstairs: crutches first, followed by the affected leg, the healthy leg last, in order to reduce the affected hip weight-bearing flexion. Post-discharge precautions: 1, after discharge from the hospital to continue the training content learned in the hospital, selective implementation, the number of times depends on the specific circumstances, do not short-term super-intensity training, should not cause pain to the extent that the pain should be appropriate to reduce the amount. 2, 4 weeks after surgery walker, crutches walking, 4 ~ 12 weeks can walk with one cane, 3 months can be simple activities. Such as walking, slow walking, swimming and so on. In the afternoon, the affected limb can be elevated for 1 hour to reduce the edema caused by walking in the morning. 3, 6 weeks after surgery, 6 don’t: don’t cross your legs; don’t lie on the affected side, if you lie on the affected side, a soft pillow should be placed between the knees; don’t sit on the sofa or low chair, hip flexion should not be more than 90 °; don’t lean forward when sitting; don’t bend over to pick up things; don’t sit on the bed with knees bent. 4, full recovery can be carried out after physical activities: walking, gardening, cycling and so on. And maintain proper weight, avoid doing activities that cause excessive pressure on the new hip to cause wear and tear, such as jumping, fast running, skating, tennis, etc..