The rehabilitation training after femur fracture has the following steps: firstly, flexion and extension exercises are done for the ankle and knee joints, together with the application of isometric contraction exercises for the quadriceps, which can effectively increase blood circulation, promote metabolism, reduce local swelling and edema, and also promote fracture healing. Secondly, around two to three weeks, the knee and hip joints can be moved in a small way, and there is bone scab formation and internal fixation at the fracture, so it will not cause displacement of the fracture end during the movement. Finally, the four to six weeks of film review to see whether the fracture end of the fracture reaches the clinical preliminary healing standards, if it reaches can be in the ground and weight-bearing, weight-bearing began to gradually increase from one-sixth of body weight, each day than the previous day, so that about 3 months, the fracture end can achieve bone healing, so that you can carry out normal lower limb activities.