Coronary stent or coronary artery bypass grafting can only relieve the blockage of one blood vessel, avoid the risk of myocardial infarction and reduce the risk. Other mild blockages can still cause chest tightness. It is suggested that drugs should be combined with treatment. At the same time, after the treatment, we should talk about diet. Fish is the main food in protein, and overeating or overeating is forbidden. Eat more fresh vegetables, fruits, lean meat, chickens, ducks, rabbits, fish, bean products and dairy products. It is not advisable to eat spicy food.