There are many ways to prevent facial palsy, and you can choose to take oral medications for prevention. The main drugs for prevention are those that nourish the nerves and enhance the immunity of the body. 1. The main drugs that nourish the nerves are those that nourish the peripheral nerves, such as methylcobalamin, and also monosialic acid tetrahexose ganglioside drugs for prevention. 2. The patient must pay attention to protection, do not blow wind or air conditioning for a long time.4. Patients with central facial palsy should pay attention to the prevention of cerebrovascular disease, especially brainstem lesions or brainstem occupational lesions that tend to compress the facial nerve, called central facial palsy.