Osteochondroma is the most common benign bone tumor, mostly occurring in adolescents, with the growth of human body, the tumor also stops growing after epiphyseal closure, so the single asymptomatic tumor can be closely observed without surgery. As osteochondroma has certain malignant rate, so for the local pain, swelling, accelerated growth of tumor or the tumor that has not changed for several years after adulthood starts to grow again, the possibility of malignant transformation should be considered, and it needs to be surgically resected in time, in addition, for the osteochondroma in the area of the pelvis, scapula, spine and the larger tumors in the base should be surgically resected in time in order to prevent malignancy. The malignant rate of multiple osteochondromas is significantly higher than that of single one, so for multiple osteochondromas, one should find a specialist to consult whether surgical resection is needed. Once malignant, the treatment will be more complicated.