The distal infarction of the circumflex branch is large, and it is best to intervene in time. The blockage of the blood vessel of the rotary branch is more serious, the coronary artery of the heart has three big blood vessels, the anterior descending branch, the right coronary artery, and the rotary branch, which are indispensable for each of the three blood vessels. The area of the heart governed by the rotary branch is relatively large, so the infarction area is also relatively large. Untreated obstruction of the retrograde branch can lead to malignant arrhythmias, heart failure, and sudden cardiac death. Once it develops, it is best to have urgent surgical intervention to place a stent to unblock the vessel. Myocardial infarction in the distal segment of the systolic branch should be taken seriously enough, and it needs to be treated actively according to the doctor’s instructions to save the dying myocardium.