The biceps is a prismatic muscle of the human upper arm, located in the front of the upper arm shallowly with a starting point and a stopping point. The long head starts from the suprascapular tuberosity and the short head starts from the rostral process of the scapula, with the long and short heads going down to the middle of the humerus and converging to form the biceps abdominis. When contracted, it thickens and bulges to show its vitality, and descends to the lower end of the humerus. The end point ends at the radial ridge and within the forearm fascia. The function of the biceps is to flex the shoulder joint, flex and externally rotate the elbow joint in the contracted position. In the extension position, it causes the upper arm to lean forward and the anterior wall to droop. The body upward movement and dumbbell exercises that are often done during exercise mainly exercise the strength of the biceps. Excessive exercise and uncoordinated movement can cause damage and breakage of the biceps. To reduce the inconvenience caused by treatment, violence and overexertion to the body should be avoided during work and exercise, affecting normal work and life.