Hard lumps of pimples on the chin are mostly seen in acne and folliculitis, first of all, you should consult a doctor as soon as possible to clarify the cause of the disease, and follow the doctor’s instructions to carry out general treatment or medication. 1. General treatment: Chin pimples may be caused by excessive sebaceous gland secretion and not paying attention to daily cleaning, no special treatment is needed, which can be improved by adjusting lifestyle and diet. Adjusting your lifestyle: Regular work and rest, avoiding late nights can reduce sebaceous gland secretion, while paying attention to timely cleaning when the pores are oily, which can reduce the production of hard lumps of pimples from the source. Dietary adjustments: High-oil, high-sugar, high-calorie foods can stimulate sebaceous gland secretion, so a light diet with less high-sugar, spicy and greasy foods can help alleviate chin acne. 2. Medication Acne: It is a chronic inflammatory skin disease, which can be treated with tetracycline such as doxycycline hydrochloride tablets and isotretinoin capsules as prescribed by the doctor, as well as topical mupirocin and retinoic acid cream. Folliculitis: inflammation caused by staphylococcal infection, which can be treated with topical mupirocin and fusidic acid under doctor’s supervision. Do not scratch or squeeze hard pimples on the chin to avoid aggravation of the symptoms, and should use medication under the guidance of a doctor.