The hard lumps inside the pimples are corns formed by the blockage of sebaceous glands and the accumulation of sebum. 1. The hard lump inside the pimple is due to inflammation of the hair follicle, sebaceous gland blockage, sebum accumulation and the formation of keratinous embolism, at this time the pus of the pimple has not matured, pay attention not to squeeze the pimple with your hand in order not to aggravate the infection. 2. Patients need to do a good job of skin cleaning, can be used externally antibiotic ointment, such as fusidic acid, mupirocin, benzoyl peroxide, etc., if necessary, with oral isotretinoin, tanshinone, minocycline tablets, anti-inflammatory and antikeratosis effect. At the same time, pay attention to a light diet, avoid excessive intake of high sugar, high fat, spicy stimulating diet. It is recommended that patients go to the dermatology department when necessary, under the guidance of the doctor for treatment, do not blindly use their own medication.