Pustules generally refer to pustules. Red pustular bumps on the back may be related to acne, folliculitis and boils, and general treatment and medication are recommended for improvement. 1. Acne: Acne may cause red pustules and hard bumps on the back, patients should have a regular routine and avoid irregular life. Topical medications such as adapalene, tazarotene and other retinoids can be used as prescribed by the doctor, which have the effect of anti-inflammatory and dissolving acne. Patients should also combine topical antibiotic drugs, such as mupirocin, fusidic acid, etc., to help antibacterial. 2. Folliculitis: Folliculitis may trigger red pustules and hard bumps on the back, and patients should pay attention to skin cleanliness. Bacterial infection should be prescribed topical mupirocin, fusidic acid and other antibiotic drugs to help anti-inflammatory. Fungal infections should be prescribed topical econazole, ketoconazole and other antifungal drugs to help kill the fungus. 3. Boils: red pustules on the back of hard bumps may be caused by boils, patients should not squeeze, pick the affected area, it is recommended that patients follow the doctor’s instructions to oral antibiotics, such as ceftazidime, amoxicillin, etc., to promote the recurrence of the rash. There are many reasons for red pustules and hard bumps on the back, so it is recommended that the patient consult a doctor for an examination to clarify the cause of the disease, and cooperate with the doctor to carry out standardized treatment.