Mites, also known as follicles, parasitic on the face can easily cause mite dermatitis, manifesting as itchy skin with red papules, which can be treated with the following methods: first, internal medication, oral metronidazole tablets, tinidazole tablets, etc.; second, insist on washing the face with sulfur soap every day; third, external medication, external 5% sulfur cream, metronidazole gel, benzoyl peroxide cream, etc.; fourth, Chinese herbal medicine treatment, taking Chinese herbs that clear the lungs and stomach, cool the blood and detoxify the blood, activate blood circulation and remove blood stasis, and also external application of 20% serpentine wash, 2 times a day, for 10 minutes.