Whether lacunar cerebral infarction requires hospitalization and how long it lasts cannot be generalized and is related to the severity of the patient’s condition. Lacunar cerebral infarction is a kind of cerebral infarction, the cause of which is small arteries in the cerebral hemispheres or deep brainstem that have lesions in the vessel walls due to long-term hypertension, resulting in occlusion of the lumen and formation of infarct foci. Because lacunar cerebral infarction usually occurs in small vessels, the infarct lesions are relatively small, generally 0.2-15 mm in diameter, and generally have a good prognosis with low rates of death and disability. Generally speaking, if the patient has a single lesion with mild symptoms or even no obvious discomfort and is in good condition, some patients may not need to be hospitalized after the doctor’s evaluation and can go home to take medication as prescribed by the doctor and have regular review. However, if the patient’s condition progresses rapidly and the symptoms are severe, the patient needs to be treated in an emergency or hospitalized in a timely manner, and the specific length of hospitalization depends on the recovery of the patient’s condition, generally ranging from 2-4 weeks. After the diagnosis of lacunar cerebral infarction, in addition to strictly following the medical prescriptions and regular review, it is also important to develop a good lifestyle, such as regular work and rest, proper exercise, diet with less oil and sugar, and abstain from smoking and alcohol.