The possibility of having pressure purpura is higher when the buttocks are beaten purple. It is mainly caused by the increase of capillary permeability under the action of external force and extravasation of red blood cells. If you are not more than 24 hours you can use cold towel wet compresses, if more than 24 hours you need to use hot towel wet compresses to make the bruises disappear quickly. You can also take vitamin C, calcium carbonate D3 tablets and rutin tablets orally to constrict capillaries. If the effect is not satisfactory, you can also take oral compound glycyrrhizin tablets 3 times a day, 2 tablets a time to carry out treatment. During the treatment period, no external force should be applied to the hip, and no spicy and irritating food should be eaten, including raw onion, raw garlic, chili, mustard, etc., and no alcohol should be consumed.