1, Practice: Select black beans first, then wash them, and their skins will wrinkle. To dry, it is best to blow with air duct, and it is better to blow with cold air. Let the black beans dry thoroughly. Pure rice vinegar must be used, usually a few dollars a bottle. The container should be clean, there will be a lot of air in the big bottle. It is best to use a small container, so that the rice vinegar is basically full to avoid mildew. Canned bottles are also good. Put two-thirds of the black spots in the container, pour in rice vinegar, cover with black beans, and add rice vinegar after the black beans are full, so that the rice vinegar will submerge the black spots. About half a catty of black beans, 1 catty of vinegar will do. Soak in 10~20 days.

2. Administration method: Take 10 capsule on an empty stomach every morning. Take it after meals for patients with gastropathy. In order not to irritate the mouth, you can drink some warm water before and after taking it.

3. Soaking black beans with vinegar is a health-preserving method, which has the functions of beautifying, losing weight, tonifying kidney, improving eyesight and blackening hair, and can effectively improve constipation, hypertension, hyperlipidemia, backache and leg pain, diabetes, prostate disease, white hair, coronary heart disease, decreased vision, eye pain, dryness, dizziness, headache and other symptoms caused by watching computer or TV for a long time.