Fracture healing time is related to a variety of factors: 1. fracture site: if the fracture is a navicular bone, femur, talus, etc., it usually takes more than 3 months to heal; if it is a fracture of other limbs, it takes 4-6 weeks to heal; if it is a fracture of the lumbar spine and pelvis, it usually heals in 4-6 weeks due to rich blood flow; 2. patient’s age: the healing time of the elderly is slower, taking 6-8 weeks to heal; young children It takes about 2 weeks to heal after fracture; about 3 weeks to heal after fracture in adolescents; about 4-6 weeks to heal after fracture in young adults; 3. Other factors: the presence or absence of fixation after fracture, the patient’s physical condition, the presence or absence of infection at the fracture site, etc. are closely related to the healing time.