Widening of the cerebral sulci at age 30 is serious. Widening of the cerebral sulcus at the age of 30 may be caused by cerebral atrophy after localized bleeding in the brain. If it is caused by cerebral hemorrhage, it is recommended that the patient observe the bleeding situation in time, if the bleeding is not actively treated, it may cause stroke, or even lead to the patient’s life is in danger, the patient should do a good job of nursing. Widening of the sulcus in some 30-year-old patients may be caused by degenerative changes in the nervous system leading to brain atrophy, which is also more serious, often suggesting that the patient’s brain volume is reduced, and the patient may gradually experience a decline in computational ability, decreased concentration, memory loss and obvious cognitive dysfunction. When the 30-year-old patient has widening of the sulcus, it is recommended to have a timely examination to clarify the cause of the disease and have active treatment under the guidance of a professional doctor.