When treating facial muscle spasm, both drugs, carbamazepine and oxcarbazepine, can be taken, and their modes of action and clinical applications are basically the same, with different adverse effects. Facial muscle spasm is mostly caused by the blood vessels in the bridge cerebellar angle area compressing the root of the facial nerve, and can be relieved by taking drugs such as carbamazepine and oxcarbazepine orally to inhibit the occurrence and spread of abnormal high-frequency discharges. Carbamazepine and oxcarbazepine are both antiepileptic drugs, which can be anticonvulsant, antiepileptic, antineuropathic pain, and antimanic-depressive. It is important to note that both carbamazepine and oxcarbazepine may have adverse effects, such as blurred vision, nystagmus, dizziness, weakness, nausea and vomiting with carbamazepine. Oxcarbazepine may have adverse reactions such as rash, allergic reactions, depression, emotional instability, etc. Therefore, you should strictly follow the doctor’s instructions when using the medication, and choose the medication according to the degree of the disease and personal situation.