Post-operative precautions after hemi-acetabular joint replacement are as follows: 1, the initial period after the completion of surgery needs to pay attention to the observation and care of the surgical wound; 2, post-operative rehabilitation, you can generally ask the rehabilitation teacher to participate in the rehabilitation activities of the patient together after surgery; 3, the later period after the patient goes home needs to pay attention to the strict implementation of the surgeon’s instructions, such as which movements can not be done, which movements can be done, because hemi-acetabular joint replacement has a certain risk of dislocation, although the risk of dislocation Although the risk of dislocation is relatively small, attention should be paid to it; 4. The major complication is infection, which needs special attention, and at the same time, the patient’s nutrition should be strengthened to avoid the re-emergence of osteoporosis, which is very beneficial to maintain the function of the hemi-hip joint.