Cardiac micro-pain consider the following reasons: 1, seen in elderly patients with a history of coronary heart disease, as well as hypertension, diabetes and high blood lipid risk factors, in the cardiac load aggravation, such as in the labor, emotional fluctuations or cold stimulation triggers such as cardiac micro-pain, accompanied by dyspnea, shortness of breath, chest tightness, and other clinical symptoms, is considered to be the cardiac load aggravation after It is considered to be caused by ischemia and hypoxia of cardiomyocytes after the heart load is aggravated. Patients should be instructed to rest, given oxygen therapy, and given oral medication at the same time.2. Seen in young patients, cardiovascular neurosis is considered, subjective symptoms are more obvious, and usually the causative factors are not obvious, and there will be pain in the heart, the pain is very long, and it will be accompanied by chest tightness, shortness of breath, and anterior region of the heart pain and other symptoms. The main thing is to give psychological treatment, and oral medication can be given if necessary.