Localized bone destruction of the right ilium is a pathological change of the bone, and the common causes are bone tumor, osteoporosis, bone infection, and so on. 1. Bone tumor: including benign bone tumor and malignant bone tumor, such as osteosarcoma. Because the tumor cells erode, absorb the bone components and keep growing to the surrounding resulting in the destruction of bone. Benign tumors have clear boundaries and show expansive growth, while malignant tumors have unclear boundaries and show erosion-like growth. 2. Osteoporosis: because of the lack of estrogen, parathyroid hormone secretion and other factors, leading to the loss of mineral salts, sparse bone trabeculae, decreased bone density, causing bone destruction. 3. Bone infection: such as tuberculosis mycobacterium infection, because the inflammation stimulates the localization, prompting bone resorption, bone destruction occurs. The causes of localized bone destruction of the right ilium are many, and may also be related to gout, ankylosing spondylitis and other diseases. If the symptoms continue to be unrelieved, it is recommended to consult a doctor in time to clarify the cause of the disease and carry out targeted treatment.