Loss of facial lines is a typical symptom of facial neuritis. Facial neuritis, commonly known as facial nerve paralysis (i.e. facial nerve paralysis), “crooked mouth”, “hanging line wind”, is a disease mainly characterized by motor dysfunction of facial expression muscle groups. It is a common and frequent disease that is not limited by age. The general symptom is a distorted mouth and eyes, and patients are often unable to complete even the most basic movements such as raising eyebrows, closing eyes, and puffing out the mouth. Then what is the main motor examination for facial neuritis? Eyebrow raising movement: check the motor function of frontal occipital muscle frontal belly. In severe patients, the forehead is flat, the wrinkles generally disappear or become obviously shallow, and the outer side of the eyebrows and eyes are obviously drooping. Frowning: check whether the frowning muscle can move, and whether the amplitude of brow movement is consistent on both sides. Eye closure: When closing the eyes, it should be noted whether the corner of the mouth on the affected side has any mouth lifting movement, whether the affected side can be closed tightly, and the degree of closure. Nose shrug: observe whether there are wrinkles in the nasal muscles, and whether the amplitude of upper lip movement is the same on both sides. Show teeth: Observe the amplitude of the movement of the corners of the mouth on both sides, whether the cleft of the mouth is deformed, and the number and height of the exposed upper and lower teeth. Nuzzle: Observe whether the distance from the corners of the mouth to the middle of the mouth is the same on both sides, and whether the shape of the nuzzle is symmetrical. Cheek puffing: mainly check the motor function of orbicularis oris muscle.