After internal fixation of acetabular fracture, if the fracture heals well, generally the plate is not easy to break and loose, but should avoid strenuous exercise and heavy weight-bearing activities. The steel plate used for internal fixation of fracture is usually made of titanium alloy, which is very strong and stable, and will not break or loosen if the fracture heals well. However, if the fracture does not heal or heals poorly due to malnutrition, poor blood circulation, infection and other factors, the plate can be loosened or broken due to secondary fracture of the bone at the plate screw site under external force. Therefore, after the internal fixation of acetabular fracture, we should actively review and observe the healing of the fracture, and gradually resume the activities of the lower limbs. In addition, strenuous exercise and heavy weight-bearing activities should be avoided after internal fixation of acetabular fracture, because the internal fixation may be loosened under the action of strong force. If there is any discomfort in the hip joint after internal fixation of acetabular fracture, it is recommended to consult the doctor in time, complete the relevant examinations, make a clear diagnosis and then follow the doctor’s instructions, so as to avoid delaying the condition.