Whether you can sleep on your side after one month of femur fracture needs to be judged according to the treatment method and the recovery of the fracture. If the fracture is treated by surgical reduction and internal fixation, it is possible; if the fracture is treated conservatively without surgery, it is not recommended to sleep on the side of the fracture. If the fracture is treated by surgical reduction and fixation, you can sleep on your side for one month because the fracture is firmly fixed. Avoid pressing the affected limb under the body when sleeping, and sleep with the healthy limb on the lower side. If conservative treatment is adopted, fixed with plaster or support, it is not recommended to sleep on the side after one month of fracture. Because the fracture has not healed firmly in one month, sleeping on the side may cause re-injury. When the femoral stem fracture is one month old, you can go to the hospital to review the fracture recovery. If the fracture is well healed, you can follow the doctor’s instructions to sleep on your side, if the fracture has not fully recovered, you should not sleep on your side.