Postoperative bone resorption alteration refers to the gradual decrease in the volume and density of bone tissue alteration under the effect of lower stress level after surgery. 1. The growth and resorption characteristics of bone tissue are closely related to mechanical factors. When the stress level is lower, osteoclasts are more active than osteoblasts, which can change the total amount of bone and lead to a decrease in bone volume. The opposite is true when the stress level is high. 2. In the process of bone resorption, active osteoclasts secrete acidic substances and enzymes to break down and absorb the mineralized bone matrix, resulting in a change in the amount of bone in the region and a decrease in bone mass. 3. Altered bone resorption after surgery may affect the therapeutic effect and prolong the healing time of bones. Timely review, reasonable diet and proper exercise are recommended to prevent postoperative complications.