Fracture line ambiguity may go away in a month, but it is not completely definitive and is related to many influencing factors. Fracture line blurring is an imaging concept that refers to an unclear gap in the fracture line. If the fracture line is blurred after surgery, it means the bone scab is growing and the bone is healing. Under normal circumstances, after 4~6 weeks of treatment after fracture, bone scab is formed and the fracture line is blurred. If a stronger bone scab is formed, it usually takes about 3 months, at which time the fracture line can be observed to disappear completely through X-ray, suggesting that the fracture can achieve complete healing. However, there are many factors affecting the initial healing to complete healing, and the time required ranges from one month to several months, and there is also the possibility that the fracture will not heal. For example, the impact of the fracture site, generally speaking, the healing time of the upper limbs is shorter than the lower limbs; the type of fracture in the comminuted fracture or fracture line spacing wider oblique fracture healing time will be longer, if the fracture combined with the soft tissue defect of the healing time may even be longer; age is also an influential factor, the healing time of the young people will be shorter than that of some of the older people, and so on. Fractures should be treated in a timely manner, with regular checkups and rehabilitation exercises under the guidance of the doctor, as well as a balanced diet and a reasonable work and rest schedule, in order to promote the healing of the fracture as soon as possible.