Cerebral atrophy is not common in 30-year-old patients, but it occurs in patients over 50 years old and can last for several years or 10 years. Cerebral atrophy refers to a decrease in the size and weight of the brain tissue, a widening of the cerebral sulcus and gyrus of the brain, such as atrophy of the cerebral cortex, which may lead to memory loss. The cause of cerebral atrophy in 30-year-old patients should pay attention to the presence of brain tumors, cerebrovascular malformations or long-term seizures due to epilepsy. It is also important to pay attention to whether the patient has excessive smoking, alcohol consumption or malnutrition, thyroid function disease, gas poisoning, alcohol poisoning, all of which can cause the destruction of brain parenchyma and nerve cell atrophy and deformation, making the patient suffer from brain atrophy.