It is not always necessary to put a stent after one month of heart attack, and stenting can be performed in severe heart attacks; if branch lesions are present on coronary angiography, stent implantation is not recommended. If the heart attack is caused by thrombosis-prone blood vessel formation of thrombus, coronary artery stenosis is mild, or due to coronary artery spasm, generally do not need to implant a stent; if the coronary arteriogram shows branching small-vessel stenosis, implantation of a stent is also not recommended. If the blockage is caused by coronary atherosclerosis, and the blockage is found to be serious during the angiography, stenting is usually needed, and the patient should take the drugs of anti-platelet aggregation, plaque stabilization and myocardial nourishment for the later period of time, as well as maintaining good dietary habits, quitting smoking and drinking, avoiding strenuous exercise, resting, and undergoing regular follow-ups. Therefore, whether to implant a stent one month after a heart attack should be based on the specific condition, and reasonably selected under the advice of the doctor.