The swelling of the hand after the pepper prick may be due to the injury of the small blood vessels in the hand after the pepper prick is stuck in the hand, and the blood will be swollen after the small blood vessels bleed and accumulate under the skin, or it may be due to the swelling of the hand after the pepper prick is stuck in the hand without timely removal of the prick and disinfection of the wound, and the wound becomes infected. Patients with infected wounds need to thoroughly clean the wound, remove the pepper thorns from the wound in a timely manner, dilate the deeper wounds, disinfect them thoroughly and then bandage them and change the medication regularly.