Lip trembling need to consider the following possibilities: 1, dystonia caused by the above discomfort; 2, consider acute cerebrovascular accidents, such as intracranial basal ganglia acute small infarction caused by the above discomfort; 3, focal partial seizures of epilepsy caused by the above discomfort; 4, the side effects of medications, such as some of the psychiatric medication caused by the above discomfort; 5, adverse emotions caused by hysterical episodes, resulting in the above discomfort The above discomfort is caused by idiopathic tremor; 7. The above discomfort is caused by thyroid dysfunction; 8. Electrolyte disorders, such as hypokalemia and hyponatremia; 9. Metabolic diseases and poisoning are excluded from causing the above discomfort. But which of the above conditions causes lip tremor, only to go to the hospital to see a doctor, and perform the relevant examination can be clearly diagnosed.