Peripheral facial paralysis is also known as peripheral facial nerve palsy, its recovery time is related to the severity of the disease, treatment and other factors, in general, most patients can recover in about one to three months, and a few serious cases may take about six months or even longer. Peripheral facial nerve palsy is mainly caused by non-specific inflammation of the facial nerve, which is clinically related to viral infection, cold and other factors. The main manifestations are crooked corners of the mouth, drooling, etc. In severe cases, paralysis of the expression muscles and disappearance of frontal lines may occur. Most of the patients with peripheral facial nerve palsy can be cured in about one month after receiving timely treatment; a few patients with serious condition or untimely treatment, the condition is delayed and serious symptoms appear, the recovery time may take about half a year. In conclusion, after the appearance of peripheral facial nerve palsy, should receive timely treatment, during the treatment to maintain a good state of mind, pay attention to rest, conducive to the recovery of the disease.