Facial neuritis, known as idiopathic facial paralysis, is a common disease in neurology. The main clinical manifestations and symptoms include acute onset, peaking within several hours to days. The primary manifestation is paralysis of the expression muscles on the affected side of the face, such as diminished forehead wrinkles, inability to open the eye, furrow the brow, or weak eyelid closure. Some patients may experience pain behind the ear, and in the tympanic membrane and external ear canal. Additionally, some patients exhibit deviation of the mouth corner, air leakage when puffing or whistling, and difficulty retaining food residues while eating or leaking water while drinking. Other patients may experience loss of taste in the anterior two-thirds of the tongue, along with secretion disorders of the salivary and lacrimal glands. Overall, the diagnosis of facial neuritis is relatively straightforward, and its clinical presentation is not particularly complex. Once the diagnosis is confirmed, timely treatment is essential, and most patients can recover.