The causes of delayed fracture healing include generalized malnutrition, poor fracture repositioning and fixation, and separation of bone ends. It should be treated by strengthening nutrition, fixing the fracture site firmly, and making the fracture ends contact with each other. 1. Systemic malnutrition: long-term malnutrition may affect the healing of fracture, eat more nutritious and high protein food to promote bone growth. 2. Inadequate fracture repositioning and fixation: Early movement and excessive force after fracture may lead to insecure fracture repositioning and fixation. This can be facilitated by re-fixing and re-dislocating the fracture site to facilitate fracture healing. 3. Separation of bone ends: Separation of bone ends due to excessive traction can also lead to delayed fracture healing. Redistribution to eliminate separation of bone ends can accelerate fracture healing. Delayed fracture healing may also be related to the presence of shear force and rotational force at the fracture end, etc. You should go to the hospital in time, and with the help of the doctor, eliminate the factors affecting delayed fracture healing in order to accelerate the healing of the fracture.