Cerebral atrophy is the most common chronic progressive disease in middle and old age. It is caused by one or more reasons, such as insufficient blood and oxygen supply to the brain, shrinking of brain tissue volume and decreasing number of brain cells, resulting in memory loss, emotional instability, reduced thinking ability, inability to concentrate, and in severe cases, dementia, language impairment, and eventual loss of intelligence as its clinical features. The disease mostly occurs in patients over 50 years old, and the course of the disease can be more than several years or even more than 10 years, more women than men. The causes of cerebral atrophy are: improper diet, heredity, ageing, infection, trauma, poisoning and so on. In particular, people do not develop good dietary habits, due to people’s partial diet and excessive intake of animal fat, resulting in an excessive increase of acidic substances in the body, resulting in an acidic environment of the blood. In the acidic environment, due to factors such as abnormal blood composition in old age, the viscosity of blood increases, making blood slow, blood flow decreases, and lipids in blood are deposited in the walls of blood vessels, resulting in roughness, deformation, and weakened elasticity of blood vessels. Brain tissue may be slightly discolored due to more extensive lipid and iron pigmentation, and atrophy of both gray and white matter is seen in the cut surface. There is atrophy of the cerebral cortex, narrowing of the cerebral gyrus, widening of the cerebral sulcus, slight thickening of the meninges, and significant enlargement of the ventricular system, resulting in the occurrence of cerebral atrophy.