If mild short-term numbness occurs in the finger with plaster, it is normal under normal circumstances, and if the numbness persists, it is an abnormal phenomenon. Numbness of fingers in plaster is generally due to soft tissue swelling at the site of plaster fixation, which may lead to transient ischemia after fixation, causing numbness of fingers. At this time, it is necessary to elevate the affected limb at the level of the heart, and use anti-swelling medication for treatment, meanwhile, appropriate activities for fingers, and the numbness will be gradually relieved in general. If the numbness is not relieved or aggravated, you need to pay attention to the tightness of the cast, there is no obvious compression leading to prolonged ischemia. If the numbness of fingers in plaster lasts for a long time, one situation is that the plaster is too tightly fixed, resulting in long time ischemia of local muscles, then you need to release the plaster in time and elevate the affected limb; another situation is that the nerve is originally damaged, and the numbness of fingers can be caused by playing the plaster, and you need to take the medicine of nutritive nerves for the treatment in this case. Numbness of the fingers in plaster need to consult a doctor in time, by the professional physician to determine the specific situation, so as to avoid delaying the condition, resulting in adverse consequences.