Calcification is caused by calcium deposits. When calcium is deposited in the kidney, it is called renal calcification. Renal calcification may manifest as back pain, difficulty sleeping, and may also lead to decreased kidney function. The disease is mainly caused by excess calcium being absorbed by the intestines. This disease mostly occurs in middle-aged and elderly people, most of them have no special clinical symptoms, once the disease does not subside on its own, if it does not damage the function of the kidneys, it does not affect the body and does not need special treatment. However, we need to go to the hospital every six months for a review to check the kidney function and urinary routine to see if the kidney calcification condition has worsened. After kidney calcification, small stones may be formed in the kidney, so you can drink more water to promote the discharge of stones. Kidney calcification and diet have a lot to do with, such as love to eat high fat and high calcium food. It is important to eat less food high in fat and calcium to prevent kidney calcification.