A 90% stenosis of the anterior descending branch usually requires stenting, at which point the patient is advised to seek medical attention in a timely manner in order to avoid delaying the condition. The anterior descending branch is mainly a branch supplying blood to the heart, and if 90% stenosis occurs, it is generally dangerous, and if the treatment is not timely, complete occlusion of the coronary artery may occur, which may lead to myocardial infarction, and may jeopardize the patient’s life. In this case, the use of medication is generally unable to eliminate the stenosis, we should go to the hospital as soon as possible to do the examination, according to the severity of the condition, the choice of surgery to treat, so as not to lead to more and more serious condition. In addition, 90% stenosis of the anterior descending branch is more harmful to the body, and it should be detected and treated as early as possible, and during the treatment period, the diet should be based on low-sugar, low-salt and low-fat diet.