Tiny thorns stuck in the arm, the location of the thorn is relatively shallow, can be removed on their own, and then disinfected bandage. If the arm is stabbed by a tiny thorn, the location of the thorn is relatively deep, you can carry out debridement treatment, and if necessary, need to be injected with tetanus vaccine. If the arm is stabbed by a tiny prick in a relatively shallow location, you can remove it by yourself with your hands or tweezers, and then use iodophor, alcohol and other disinfectant to disinfect the local area and then bandage it. If the location of the tiny prick on the arm is deeper and can not be removed by yourself, you need to go to the hospital for debridement, usually the doctor will expand the wound and remove the prick, and then disinfect the local area to stop the bleeding and bandage treatment. In addition, the location of the stabbing on the arm is deeper need to timely injection of tetanus vaccine, to prevent the wound from being infected with tetanus bacillus. It is recommended that when a tiny thorn in the arm can not be treated on their own, the patient needs to consult a doctor in a timely manner, and the doctor will choose the appropriate measures to treat the wound according to the condition of the wound.