A large bump on the head is considered to be related to trauma, boils, sebaceous cysts, etc. General treatment, medication and surgery can be used to reduce the swelling. 1. Trauma: If a big bump on the head is caused by trauma, the patient can apply ice packs locally within 72 hours to help improve the swelling phenomenon; hot compresses can be applied locally after 72 hours to help promote blood circulation and reduce swelling, etc. If the skin on the head is broken, iodine can also be used to disinfect the skin. If the skin on the head is broken, iodine povidone can be used to sterilize the wound, and when the wound is large, it is necessary to seek medical treatment and surgical debridement. 2. Boils: acute suppurative dermatosis caused by bacterial infection of hair follicles and their deep surrounding tissues, can also cause a big bag on the head. This can be treated with topical mupirocin ointment, fusidic acid cream or oral antibiotics such as cefuroxime and amoxicillin. Daily use of chlorhexidine solution, povidone-iodine solution disinfection. If necessary, surgical incision and drainage of pus is feasible. 3. sebaceous cysts: clinical sebaceous cysts to surgical excision based on the complications of infection, incision and drainage, but also with cefixime, amoxicillin and other anti-infective drugs as prescribed by the doctor. It is recommended that a large bag on the head for medical examination, if it is clear that the disease is caused by the need to actively cooperate with the doctor, to be controlled by the disease or cure, the local swelling phenomenon can be relieved or disappeared. The above drugs should be used in accordance with medical advice.