Points: Feishu (BL13), Jueyinshu (BL14), Xinshu (BL15) and Dushu (BL16)
Technique: After the arrival of qi, the electric stimulator is connected. Stimulation with an electric impulse at low frequency should be applied. The output amount is by what the patient can tolerate. A treatment lasts 10 minutes, once a day, 12 sessions making up one course. There should be an interval of four days between two courses. The above method was used in 110 cases of coronary heart disease, and ECG results showed a total effective rate of 72.2%, while the total effective rate of the relief of angina pectoris was 92.3%.