Delayed fracture healing is when the fracture healing time is more than double the normal healing time, but the fracture site still has pain, pressure and abnormal activity, and the X-ray shows that the fracture line is not blurred and the scab growth is sparse, then it is called delayed healing. In common language, it is called delayed healing if the fracture grows slowly and does not heal even after reaching the normal healing time. Third, strengthen the functional exercise, such as lower limb fracture delayed healing to walk more, more stimulation of the fracture site, for example, you can pad a brick at the head of the bed, and then use your heel to stir this brick, strengthen the longitudinal axis of stimulation of the fracture will heal early.