Sudden inability to speak is considered to be caused by damage to the speech center of the cerebral cortex, which is commonly caused by cerebrovascular accidents, such as cerebral hemorrhage or cerebral infarction, or transient ischemic attack, and may manifest as inability to speak or slurred speech when the speech center of the patient is damaged. Patients should consult a hospital promptly for examination and treatment. If brain hemorrhage is considered to be a threat to the patient’s life, active dehydration and lowering of cranial pressure are needed to prevent further bleeding, and in severe cases, surgery or drilling and drainage may be required for treatment. In case of ischemic cerebrovascular disease, such as cerebral embolism or cerebral thrombosis, a series of treatments such as thrombolysis, fibrin-lowering, anticoagulation, antiplatelet and cerebral protection should be given in the acute stage to try to save the neurological function of the brain so that the patient can recover his language.