After Kirschner’s pin loosening, should go to outpatient clinic for formal treatment, should be based on the location and role of Kirschner’s pin for removal of Kirschner’s pin or external fixation support protection and other treatments. If the Kirschner’s pin that fixes the fracture part loosens, the Kirschner’s pin should be taken out in time, and after taking out the Kirschner’s pin, attention should be paid to avoiding weight-bearing on the fracture part, so as to prevent the fracture end from being displaced again. If you suffer from osteoporosis or are older, and the fracture end has not yet been stabilized, the fracture end can be fixed with the aid of plaster, support, splint, etc., after taking out the Kirschner’s pin. If the Kirschner’s pin, which maintains the relationship between the joints in alignment and subluxation, is loosened, it needs to be protected by auxiliary splints and external fixation braces so as not to cause loosening of the joints. After the Kirschner’s pin is loosened, you should go to the hospital in time, and be treated by a professional doctor to avoid unauthorized pulling out or inserting the Kirschner’s pin, which may cause adverse consequences.