Chest muscle throbbing can be caused by improper exercise, hypocalcemia, coronary atherosclerotic heart disease and other factors. 1. Improper exercise: chest muscle exercise before not warming up or exercise too much, too long, easy to cause chest muscle strain, muscle spasm phenomenon, manifested as chest muscle throbbing, through rest and massage, relaxation, chest muscle throbbing symptoms will improve. 2. Hypocalcemia: hypocalcemia patients due to the decrease of calcium ion concentration in the blood serum, will lead to muscle spasm, manifested as chest muscle throbbing. Hypocalcemia may be caused by hypoparathyroidism. 3. Coronary atherosclerotic heart disease: When coronary atherosclerotic heart attack occurs, the patient will have irregular heartbeat, which may also lead to chest muscle throbbing, and the patient may also have pain in the precordial area, dyspnea and other symptoms. In short, when the chest muscle throbbing occurs, it is important to pay attention to it and go to the hospital in time for treatment.