After the removal of Kirschner’s pin, the hole is left, should be well sterilized and changed to avoid infection, if necessary, can be treated with medication such as recombinant human epidermal growth factor gel. Kirschner’s needle is the most commonly used orthopedic fixation material, its diameter is about 1mm or so, generally used for relatively short bone fracture fixation, such as finger, toe fracture fixation. 1-2 days or so the hole to form a hematoma, about 2 weeks of fibrosis and newborn small capillaries began to grow, to 3 weeks or so to begin to form a fibrous scab, and slowly become bony bone scab to promote the healing of the wound. After pulling out the Kirschner’s needle, the main thing is to disinfect and change the dressing on time, can be sterilized with iodine povidone and wrapped with gauze to avoid infection, if necessary, follow the doctor’s advice to take oral levofloxacin and other anti-infection treatment. If the recovery process is slow, you can apply recombinant human epidermal growth factor gel and other auxiliary treatment to speed up the recovery of the hole. For the holes left after the removal of Kirschner’s needle, you should seek medical treatment in time and actively diagnose and treat. The above drugs need to be used in a standardized manner under the guidance of a doctor.