Usually, renal calcification foci are not a kind of disease, but a kind of after-effects after the disease. Whether it is serious or not should be determined according to the specific situation, small and stable calcified foci are not serious, while larger calcified foci will affect the function of the kidney, so it is more serious. In case of smaller calcified foci, most of them are seen after healing of renal tuberculosis, usually no abnormalities will occur, which is not considered serious; or there are small foci of infection in the kidney, after the smaller foci of infection get better, the calcium will also be deposited, forming calcified foci, but it is not serious. If it is a larger calcified foci, it may affect the local kidney function, and even some patients will have blood creatinine elevation, etc., which is more serious. If the renal calcification foci have a tendency to increase in size, it is recommended that the patient consults the doctor in time for relevant examinations, and according to the specific situation, follows the doctor’s advice and actively cooperates with the treatment.