The occurrence of facial muscle atrophy is mainly due to the reduction in the size of some facial tissues or parenchymal cells, and the causes of the disease are relatively diverse. When facial muscular atrophy occurs, the patient’s symptoms are mainly the following: facial muscular atrophy first forehead and or cheek areas appear patchy atrophy symptoms, and the local skin color will be deeper than other parts of the skin, the subcutaneous tissue can also appear muscle tension. As the disease worsens, the facial muscles will atrophy, followed by symptoms such as incomplete eye closure or inability to puff the cheeks normally, and in severe cases, even bilateral tongue muscle atrophy. The temporal and chewing muscles of patients with facial muscular atrophy usually have limited atrophy symptoms after the onset of the disease, such as unconscious deviation of the jaw in the direction of the affected side when opening the mouth, accompanied by corneal reflexes or facial sensory weakening symptoms, and if the symptoms are more severe, there can also be loss of facial sensation. Facial muscle atrophy is only a symptom or a sign, we must look for the cause carefully, such as myotonic dystrophy, neuronal injury, tumor or temporal bone infection can cause facial muscle atrophy, we need to find out the cause and deal with it in time to change the original disease and the process of facial muscle atrophy.