Besides very clear kidney diseases, there are some diseases that can affect the kidneys and may even eventually cause kidney failure, therefore, an early visit to nephrology can help early detection and early treatment. Especially with the change of modern living habits, it makes the spectrum of diseases in the country has changed. Hypertension, diabetes, metabolic syndrome, etc. can cause kidney damage, and in young patients with hypertension, it is more important to start urine tests when high blood pressure is detected. Other diseases such as systemic lupus erythematosus, allergic purpura, infectious diseases in the elderly, long-term use of traditional Chinese medicine, and after intravenous application of contrast media should be consulted or seen by the nephrology department.