The causes of slurred speech usually include tumor compression, short tongue tie or cerebrovascular disease, etc. Once found, patients should seek medical treatment in time. 1. Tumor compression: when the volume of oral pharyngeal tumor increases to a certain extent, it will compress the laryngeal nerves, affecting the patient’s pronunciation and causing the symptom of slurred speech. 2. Short tongue tie: if the tongue tie is too short, it will affect the pronunciation and lead to slurred speech and other symptoms. 3. Cerebrovascular disease: patients with cerebrovascular disease, such as cerebral infarction, cerebral hemorrhage, if the lesion affects the speech center, it will lead to speech dysfunction and symptoms of lisp. If the symptoms of slurred speech, it is recommended to go to the regular hospital in time to find out the cause and timely treatment, so as not to delay the condition.