Comminuted fracture of the proximal left femur is serious and requires prompt treatment. 1. Shock: comminuted fracture is usually caused by large violent injury, which may be accompanied by a large amount of bleeding, thus inducing hemorrhagic shock, which is more serious. 2. Limb dysfunction: poor recovery of comminuted fracture will have an impact on the activities of the limbs, impaired mobility. 3. Slow recovery: comminuted fracture means that the bone is broken into three or more pieces, because the bone is broken more seriously, and will be accompanied by serious damage to the surrounding soft tissues, so compared to ordinary fracture recovery is slower. 4. Poor healing: Comminuted fracture may suffer from poor healing, and in severe cases, even bone nonunion may occur, which will seriously affect the recovery. To summarize, comminuted fracture of proximal left femur is relatively serious. If the comminuted fracture occurs, it should be timely consultation and standardized diagnosis and treatment. Postoperative diet should pay attention to strengthen the nutrition, and actively carry out rehabilitation exercise, which is conducive to the recovery of the fracture.