If homocysteine is greater than 30umol/L, it is recommended to improve the bad habits in daily life and supplement folic acid, vitamin B6 and vitamin B12 for treatment. Homocysteine contains sulfhydryl groups and is a metabolite produced by methionine and cysteine. Excessive production of the metabolite and its inability to be excreted will lead to an increase in homocysteine levels, which normally do not exceed 15umol/L. Any higher than this value can be diagnosed as hyperhomocysteinemia. Hyperhomocysteinemia is an independent risk factor for cardiovascular disease and may lead to atherosclerosis, so timely intervention is needed. It is recommended to pay attention to dietary modification first, pay attention to a light diet, avoid high-fat, high-calorie foods, and consume more fish foods and legumes. In addition, it is also necessary to take oral folic acid and vitamin B6, vitamin B12 under the guidance of the doctor to carry out reasonable treatment. It is recommended to consult the Department of Cardiovascular Medicine of regular hospitals.