First, the role of the shoulder girdle muscle: 1, the muscles that raise the scapula are: upper trapezius, rhomboid muscle, scapularis, etc.. 2.The muscles of descending scapula are: lower trapezius, pectoralis minor and lower serratus anterior. 3.Muscles of anterior extension of the scapula include: serratus anterior and pectoralis minor. 4.The muscles of retracted scapula are: trapezius and rhomboid. 5, The muscles of upper retraction scapula are: upper and lower muscle fibers of trapezius and lower muscle fibers of serratus anterior. 6, lower rotation of the scapula muscles are: rhomboid, pectoralis minor and scapularis. Second, the role of the shoulder joint muscles: 1, flexion of the shoulder joint muscles: pectoralis major, anterior deltoid muscle fibers, biceps brachii and rostro-humeral muscle. 2.Muscles of the extended shoulder joint: posterior deltoid muscle fibers, long head of triceps brachii, latissimus dorsi, infraspinatus, teres minor and teres major. 3.Muscles of abduction shoulder joint: deltoid and supraspinatus. 4.Muscles of adduction shoulder joint: subscapularis, pectoralis major, latissimus dorsi, subscapularis and teres major, infraspinatus, teres minor and rostro-humeral. 5.Muscles of externally rotated shoulder joint: posterior deltoid muscle fibers, infraspinatus and teres minor. 6.Muscles of internal rotation shoulder joint: anterior deltoid, pectoralis major, latissimus dorsi, subscapularis and teres major. Third, the role of the elbow joint muscles: 1, flexion of the elbow joint muscles: brachioradialis, biceps brachii, brachioradialis and rotator anterior round muscle. 2.Muscles of the extensor elbow joint: triceps brachii and elbow muscles. 3, Muscles of the internally rotated elbow joint: pronator teres, pronator teres and brachioradialis. 4, the muscles of the externally rotated elbow joint: rotator anterior, biceps brachii and brachioradialis (the latter two muscles are externally rotated in the case of internally rotated forearm). Fourth, the role of the wrist joint muscles: 1, the muscles of the flexor hand joint are: radial wrist flexor, palmaris longus, ulnar wrist flexor, superficial finger flexor and deep finger flexor. 2.The muscles of the extensor hand joint are: radial long extensor carpi radialis, radial short extensor carpi radialis, ulnar extensor carpi ulnaris, extensor digitorum superficialis and extensor digitorum esculentum. 3, the muscles of the abductor hand joint are: the muscles located in the sagittal axis of the hand joint on the lateral side of the wrist flexion, wrist extension (i.e., radial wrist flexor, radial wrist extensor, radial short extensor and index finger extensor, etc.). 4, internal hand joint muscles are: located in the sagittal axis of the hand joint medial wrist flexion, wrist extension of the muscles (i.e., ulnar wrist flexor and ulnar wrist extensor, etc.). Fifth, the role of the hip joint muscles: 1, flexion of the hip joint muscles: iliopsoas muscle, rectus femoris muscle, suture muscle, broad fascia tensor muscle and pubococcygeus muscle, etc.. 2, the muscles of hip joint extension are: gluteus maximus, great adductor, long head of biceps femoris, semitendinosus and semimembranosus, etc.. 3.The muscles of abduction hip joint are: gluteus medius, gluteus minimus, upper gluteus maximus and pyriformis. 4.The muscles of the adduction hip joint are: great adductor, long adductor, short adductor, lower gluteus maximus, thin femoral muscle and pubococcygeus muscle. 5.The muscles of externally rotated hip joint are: iliopsoas, gluteus maximus, pyriformis, gluteus medius, posterior portion of the minimus and suture muscles. 6, internal rotation of the hip joint muscles are: gluteus medius, the anterior part of the small muscle and the broad fascia tensor.