The method of eliminating hard bumps on the buttocks of injections is mainly considered as follows. If it is a simple hard bumps, accompanied by slight tingling, without any other clinical discomfort, then you can apply hot towel locally for hot compress, the temperature should not exceed 40℃, and the time is about 20 minutes, usually the hard bumps will be absorbed naturally after 1-2 weeks, without any medication. If there are localized hard bumps with redness, swelling, heat, pain, and even purulent fluid flow, it is considered as subcutaneous lipofuscinosis. Under the guidance of a dermatologist, you can take oral roxithromycin capsules, or moxifloxacin hydrochloride tablets. In terms of topical medication, topical cold and wet compresses can be applied with compound cypress lotion, followed by a mixture of mometasone furoate cream and fusidic acid cream for topical application, which can also be combined with red light treatment. During the treatment period, spicy and irritating foods should be avoided, and squeezing the hard bumps with hands should be prohibited.