There are many factors that can cause redness around the mouth, and treatment should be based on the cause. If the redness around the mouth is caused by stomatitis, it needs to be improved with vitamin B. If the redness around the mouth is caused by dry weather, you need to keep the corners of the mouth moist and treat it with glycerin and aloe vera gel to keep the corners of the mouth moist; if it is caused by fire, you should avoid eating sour, spicy and irritating foods, eat more vegetables and fruits that contain more fiber and vitamins to improve the situation, eat a light diet, and drink some If the redness around the mouth is caused by eczema, it can be treated with erythromycin ointment; if the redness of the corners of the mouth is caused by allergies, we should find out the source of allergies, avoid contact with allergens, and also eat some anti-allergy drugs to treat. In short, the treatment should be carried out according to the appropriate cause in order to achieve rapid treatment and healing effect.