The appearance of lymph node swelling behind the occiput is mostly caused by bacterial infection, manifested as inflammation of lymph nodes, all of which are infected by Staphylococcus aureus, and appear enlarged in the place of lymph nodes, with redness on the surface, and even a small amount of pus on the surface. Cefixime or cefradine can be taken orally, and the surface of the lymph nodes can be sterilized with iodine vapour. If the pus is able to break up on its own, it needs to be covered with gauze or dressings after being sterilized with iodine vapour. If the pus head does not break up on its own, or does not shrink significantly during treatment, the surface can be incised with a needle or blade to drain the pus, then sterilized with iodine vapour and covered with a sterile dressing. In about 7-10 days of treatment, the inflammation of the lymph nodes can all subside, the redness and swelling can be reduced, and the enlarged lymph nodes can be reduced in size.