It works. Shanzhong acupoint is one of the most important acupoints in the human body, located in the center of the chest and closely related to organs such as the heart and lungs. Electrotherapy is a method of stimulating human acupoints with electric energy, which can promote blood circulation, relieve pain and improve immunity. Therefore, electrotherapy stimulation of Shanzhong point can play a certain role. Electrotherapy stimulation of Shanzhong point can relieve symptoms such as cough, chest tightness, shortness of breath and palpitation, and has a certain auxiliary treatment effect on respiratory diseases such as asthma and chronic bronchitis. In addition, electrotherapy to stimulate Shanzhong point can also promote thymus gland to secrete immune active substances, improve human immunity and enhance body resistance.