Skeletal muscle is mainly distributed in the parts of the body with bones, basically all over the body, can be connected to more than one piece of bone, a few attached to the skin, in the human body there are more than 600 pieces of skeletal muscle. Skeletal muscle is usually controlled by human will, innervated by the somatic nerve, also called random muscle, with diastolic and contractile function, is also a kind of transverse muscle. Skeletal muscles of the limbs include biceps brachii, triceps brachii, quadriceps femoris, tibialis anterior and calf triceps, etc. Skeletal muscles of the trunk include rhomboids, scapularis, pectoralis major, etc. These muscles are powerful in daily life. These muscles are powerful and important to the human body as they mainly control joint activities in daily life, keep joints stable and avoid accidents such as joint dislocation. It is important to strengthen the skeletal muscles to enhance their power and strength, which is beneficial to improve joint stability and protect the bone and joint.