In recent years, Chinese scholars have made careful laboratory observations on severe infectious diseases such as fulminant epidemic meningomyelitis and toxic dysentery, and suggested that acute microcirculatory disorders caused by microarterial spasm are the main pathological changes in the early stages of these diseases and are the basis for a series of severe symptoms. Bacteria, viruses, physical and chemical factors, as well as secondary changes such as ischemia and hypoxia, acidosis, etc., can act on the microvascular wall, causing direct or indirect damage to it. The earliest reaction is the swelling and separation of the endothelial cells, and in severe cases, the endothelial cells may die into “herpes”-like protrusions, or even endothelial cells may be shed, resulting in narrowing of the microvascular lumen and various obstacles to microvascular blood flow. These lesions can cause severe damage to the integrity and extension of the microvascular wall, resulting in lengthening, bending, and local expansion of the microvessels to form microangiomas. These lesions can further slow down the blood flow, aggravate the stagnation, and form pathological microscopic blood pools locally in the lesions. This is where platelet, leukocyte, or red blood cell aggregation is most likely to occur and “sludge” the microbleeds, contributing to local or systemic disseminated intravascular coagulation. In addition, necrosis of endothelial cells in the microvascular wall, exposure of collagen under the endothelial cells, and contact between plasma and collagen can all contribute to local or systemic disseminated intravascular coagulation. How to effectively prevent microcirculatory disorders? Microcirculation disorders are commonly found in middle-aged and elderly people. In order to prevent the occurrence and development of microcirculation disorders, people should pay attention to moderate exercise and reasonable nutrition, in addition to taking functional health care products to improve microcirculation, reduce blood viscosity and prevent microthrombosis, especially for post-stroke, cardiac and cerebral blood supply deficiency, diabetes, vasculitis, etc. It has good rehabilitation and auxiliary effects. It is also possible to combine with traditional Chinese medicine. It needs to be checked and treated in a regular hospital. In fact, small methods in daily life can protect the heart. Drinking 1 cup of green tea every day is very beneficial to the heart. Green tea is rich in catechuic acid, can enhance the flexibility and elasticity of blood vessels, can effectively reduce cholesterol and hardening of blood vessels. Eat 3 walnuts a day can make cholesterol drop, the possibility of heart disease is greatly reduced, eat more apples vegetables and fruits.