Acne is generally referred to as acne, the patient will appear the symptoms of skin nodules, need to actively treat acne, to achieve the purpose of eliminating nodules, commonly used treatment for general treatment, topical drugs (such as Vitamin A acid), systemic drugs (such as metronidazole) and other treatments. 1. General treatment: keep the affected area clean, prohibit spicy and greasy food, keep the bowels unimpeded, and maintain good work and rest habits. 2. Topical medication: mild acne can be treated with retinoic acid; when complicated by infection, fusidic acid cream and erythromycin ointment can be used; azelaic acid can also be used to reduce hyperpigmentation caused by inflammation. 3. Systemic medications: moderate and severe acne can be treated with tetracycline, metronidazole and other drugs; severe acne and other drugs can be treated with isotretinoin; acne accompanied by hyperandrogenism can be treated with anti-androgenic drugs such as spironolactone. It is recommended that the patient consult a doctor in time and carry out the relevant treatment under the guidance of the physician.