Many patients with osteoporosis have complicated with CKD. It was reported that the risk of hip and vertebral fracture is higher in osteoporosis patients with CKD than without CKD. Because the drugs for osteoporosis are excreted by kidney, there are no drugs that the efficacy and safety were established for the CKD patient. I give an outline about the relationship between CKD and osteoporosis, and the note on the medical care of osteoporosis patients with CKD.