Whether to operate for osteochondroma depends on the following factors: 1. Age. Generally less than 15-18 years old need surgery, because adolescents are in the growth period and osteochondroma can affect limb development and lead to deformed limb growth; 2. Symptoms. If osteochondroma causes pain after joint activity, and the pain is confined around the tumor or local swelling is obvious, it is better to have surgery; 3. Location. Osteochondroma in the spine, pelvis and around the hip joint is best removed surgically because of the possibility of malignant transformation; 4. Osteochondroma that keeps growing in adults. In adults, osteochondroma usually does not grow anymore, but if the tumor keeps getting bigger, it is better to remove it as soon as possible because it may have malignant change; 5. CT or MRI examination shows that the thickness of cartilage cap is more than 1cm, it is better to remove it surgically. Yao Weitao, Department of Bone and Soft Tissue, Henan Cancer Hospital