After the finger is smashed with bruises inside turning black and purple, you should promptly remove the bruises and reduce swelling, elevate the affected limb and surgery and other ways. 1. should be timely, as soon as possible to remove the bruises: can be used early with cold compresses first swelling, and then hot compresses, or physical therapy, to promote the removal of the inside of the bruises. If the bruise blood accumulates, it can also be sterilized and released with a needle prick. 2. Normally, you can also elevate the affected limb to increase the amount of blood returning to the heart, so that less blood will accumulate in the fingers. 3. If there is too much bruising, it can be removed surgically, which will be more thorough. Avoid long time blood stagnation and become necrosis, and cause serious consequences. It is recommended that once discomfort occurs, you should go to the relevant professional department for examination and treatment in a timely manner, to avoid delaying the condition and delaying the best treatment time.