Whether the fracture is easy to re-fracture is generally related to the healing of the bone scab, the amount of activity and the stress at the fracture healing place, etc. Generally, the fracture is easy to re-fracture in the early stage after the fracture, and the fracture heals well in the late stage without re-fracture. Early re-fracture after fracture is mostly related to premature activity and strength of bone scab, and late re-fracture is mostly related to excessive stress load. In the early stage after fracture, because the bone scab has not yet reached a certain degree of hardness, it is easy to re-fracture, and the factors of re-fracture are mostly related to early activities and insufficient strength of bone scab. Therefore, it is necessary to pay attention to the control of activity in the early stage of fracture. In the late stage of fracture, it is not easy to be re-fractured, mainly because the scab formation is strong enough to resist external force, shear force and muscle tension, etc. However, there is a risk of re-fracture, such as excessive stress loading at the fracture site; and it is even more difficult to be re-fractured when the scab enters into remodeling stage. Patients with bone fracture are advised to go to the hospital for regular checkups and strive for early recovery.