Facial palsy on the left side of the face is considered to be facial neuritis, also known as idiopathic facial nerve palsy, which is a peripheral facial neuritis. In the acute phase, the patient can usually be given medication to reduce the swelling of the facial nerve. If the patient is heavy, the hormone dexamethasone 10mg can be routinely applied and after 3 days of continuous sedation, it can be changed to 5mg for 2-3 days depending on the patient’s condition. The hormone dexamethasone 10mg can be used in combination with drugs that improve microcirculation, such as prostilbestrol. If the patient’s facial palsy is more severe, medication to reduce facial nerve swelling, such as sodium heptaerythroside for injection, can be used, but sodium heptaerythroside for injection has the phenomenon of stimulating blood vessels, and individual patients have difficulty in tolerating the pain because of blood vessels. If the patient’s facial palsy is severe, the facial neuritis is considered to be caused by a virus, and can be accompanied by sedative antiviral drugs, such as ganciclovir or acyclovir. After the acute stage, the patient can be given acupuncture, cupping and other complementary treatments of Chinese medicine, and the patient can also be given the Chinese medicine Huafeng Dan to be taken orally.