Heart bypass surgery is considered major surgery, not minimally invasive. Cardiac bypass surgery is an effective treatment for coronary artery disease, which involves taking one’s own saphenous vein, radial artery or arterial vessels from elsewhere and transplanting them, anastomosing the grafted vessels to the aorta and the distal coronary arteries in the diseased area, and then improving the supply of coronary artery blood by draining the blood from the main arteries. The surgery is performed under general anesthesia, open heart surgery, extracorporeal circulation, and cardiac arrest, and takes a long time, so it is a major surgery, not a minimally invasive surgery. After the operation, vital signs should be closely monitored, fluid intake and output should be controlled, anticoagulants should be taken after the operation, and regular checkups should be performed.