Patients with cerebral infarction are drowsy. The reason for drowsiness can be the infarcted part of the brain, which has the role of governing the state of consciousness of the human body, so drowsiness occurs; patients will also be in a drowsy state before entering a light coma state, which is manifested by a longer sleep time, being able to be awakened and being able to answer questions correctly, and is the drowsy state of the patient, especially occurring in the elderly when cerebral infarction occurs. Patients who appear to be unable to answer questions correctly are in a state of somnolence. Entering a state of somnolence will aggravate the condition, and patients will enter a state of light coma, and active treatment must be carried out during the stage of somnolence to avoid further aggravation.