Precautions after femoral neck fracture surgery are to avoid some positions that can easily lead to prosthesis dislocation, as well as basic early post-operative vital signs observation and drainage tube care to avoid infection. Early functional exercise after surgery, walking exercise after surgery, etc. There are special requirements for posture, which requires attention to keep the affected limb straight and abducted, put the pelvis square and lying flat on the hospital bed, with both lower limbs spaced by crotch pads and both legs kept apart. The affected limb should be held in an abduction-neutral position and fixed with nail shoes. In the early postoperative period, it is not advisable to turn over more often, and attention should be paid to maintaining the abduction-neutral position of the replacement limb when turning and lifting the hips to prevent internal rotation. In the early stage, avoid straight waist lifting movement, turn over in the lateral position, lie on the healthy side and place an abductor pillow between the two thighs to avoid movements that may easily lead to hip prosthesis dislocation. Do not squat, sit on a low stool, cross your legs or sit cross-legged. Early functional exercise, toe, ankle, forward flexion and dorsiflexion passive activities can be performed after surgery, and functional exercise of quadriceps isometric contraction activities can be performed after anesthesia disappears. On the third postoperative day, the patient can be assisted to perform functional exercises of the affected limb joints. One week later, the patient should be instructed and assisted to sit on the bedside with legs hanging down and actively practice knee extension and flexion activities. After two weeks of stitch removal, the patient should be instructed and assisted to walk on the ground with crutches and without weight on the affected limb.