Acne that turns into hard bumps is usually a sign of increased inflammation and usually requires anti-infective and antibacterial treatment, as well as good local hygiene. Pimples are the initial stage of acne. Acne is caused by hormonal imbalance during puberty, resulting in secretions that clog pores. If infection with bacteria such as Propionibacterium acnes causes inflammation to worsen, acne may turn into hard bumps, which requires anti-infective and antibacterial treatment. Local erythromycin ointment, fusidic acid cream, ichthyol ointment and so on can be applied externally, which have antibacterial and anti-inflammatory effects to a certain extent. It is also recommended to check the blood routine to find out whether there is an increase in leukocytes or neutrophils in the blood, if both are elevated, it is recommended to take oral minocycline or roxithromycin for antibacterial treatment. In addition to antibacterial and anti-infection, we should also do a good job of local cleanliness and hygiene, clean the skin in a timely manner, avoid sebum secretion, avoid sebum clogging pores. If you find acne becomes hard bumps, it is recommended to consult a dermatologist for treatment under the guidance and advice of a doctor.