Hair follicle mites are parasitic in the human body, and there are small amounts in the hair follicles of normal people, which do not cause inflammation. However, in many middle-aged women and men, improper diet, such as eating thick, greasy, spicy food and alcohol, can cause local immune disorders, resulting in the proliferation of parasitic hair follicle mites, causing inflammation of hair follicles and red acne, which is called rosacea. The treatment of rosacea begins with a controlled diet. Do not eat spicy alcohol, greasy food. Topical sulfur ointment can be applied topically, once a day at night. During the day, use an antibiotic cream, such as metronidazole gel. When the inflammation is more severe or there is pus head, you can take oral minocycline hydrochloride, 100 mg per day for 4 to 6 weeks. If the face is more oily, you can cleanse the skin with an oil-removing cleanser twice a day and try not to use foundation to avoid clogging the pores. Individual patients who have frequent stomach discomfort. It is recommended to check the stomach for H. pylori and just do a blow test. Some patients with rosacea have a combination of H. pylori infection in the stomach. Rosacea can also be treated with photodynamic therapy, dye laser therapy, and blue light therapy.