Complications of fracture are divided into early complications and late complications of fracture. Early complications of fracture, pay attention to shock, fracture produces shock is also a more serious complication, are caused when the injury is more serious, hemorrhage, or important organs are damaged. As well as fat embolism syndrome, which occurs mostly in adults because of the high tension of the fracture intramedullary hematoma, destruction of the bone marrow, and fat dripping into the ruptured epidural. As well as causing injury to vital organs, such as lung injury due to rib fracture, as well as rupture due to liver and spleen injury, bladder injury, rectal injury, urethral injury, etc., as well as injury to vital peripheral tissues, such as vital vascular injury, spinal cord injury, peripheral nerve injury, etc., and the possibility of fascial compartment syndrome, which is also a more serious complication, must be noted. Late complications of fracture include, crushing pneumonia, decubitus ulcers, venous thrombosis of the lower extremities, urinary tract infection, etc. The above complications occur mostly in patients who are bedridden for a long time after fracture. Other complications include injury-related ossification disease, such as joint sprain, dislocation or fracture near the joint, which leads to periosteal detachment and formation of subperiosteal hematoma, as well as complications such as traumatic arthritis and joint stiffness. Patients with fractures should pay high attention to early complications of fractures as well as late complications, and should actively treat early complications as well as prevent late complications, etc.