The male chin repeatedly grows hard pimples usually consider is acne, you can according to the patient’s symptoms, condition, etc., through the general treatment, topical medication, oral medication, phototherapy, etc., to improve the symptoms. 1. General treatment: recurrent acne on the chin has a certain relationship with the lack of cleanliness, it is recommended that patients usually do a good job of skin hygiene and cleanliness, use mild cleansing products to wash the face, pay more attention to rest, ensure that sleep, diet to light and easy to digest, avoid eating spicy and stimulating food. 2. Topical medication: acne is more obvious, you can use exfoliators for treatment, such as isotretinoin, retinoic acid cream, etc.; you can also use benzoyl peroxide to dissolve acne, anti-infection treatment; you can also consider the use of topical antibiotics to inhibit the reproduction of Propionibacterium acnes, such as fusidic acid cream, erythromycin ointment. 3. Oral medication: Acne is generally caused by Propionibacterium acnes, and repeated episodes of acne can be treated with oral antibiotics, such as doxycycline, minocycline, etc. Oral isotretinoin can be used to inhibit sebum secretion and reduce the recurrence of acne, but there are teratogenic side effects, and is prohibited for males of childbearing age; it can be used as oral glucocorticosteroid therapy, such as prednisone. 3. Physical therapy: If necessary, physical therapy can be used to clear acne and reduce the production of post-inflammatory hyperpigmentation, such as photodynamic therapy, laser and so on. It is recommended that patients go to the dermatology department of regular hospitals, strictly follow the doctor’s instructions for the use of medication, not blindly self-medication.