If the back of the head protrudes for bony tissue, there can be two possibilities: First, occipital tuberosity: belongs to the normal bony tissue, the degree of protrusion is related to the development of the individual, there is variability, not accompanied by pain, swelling symptoms, do not need special treatment. If there is obvious local swelling and pain, it is considered to be the local ligament and tendon strain caused by repeated friction, repeated head down and head up, and aseptic reaction occurs, which can be properly given to the local hot compresses, and oral anti-inflammatory and analgesic drugs can be taken if necessary, such as ibuprofen extended-release tablets; Second, the stop of the sternocleidomastoid muscle: it is also called the mastoid process, symmetrical on both sides, which is a normal physiological structure, and it does not need any special treatment. If there is localized swelling and pain, most of them belong to aseptic inflammation and can be further treated with anti-inflammatory and analgesic treatment. If other bony tissues in the back of the head are abnormally protruding, excluding tumors and other occupying factors, it is necessary to make a clear diagnosis through cranial CT examination, and further surgical treatment.