Urine can be checked for red blood cells, white blood cells, urine protein, urine bilirubin, urine bilirubinogen, urine sugar, urine ketone bodies; also the pH value of urine can be checked; also the number of white blood cells and red blood cells in urine can be checked; also the presence of mucus filaments and mold can be found; also the presence of tumor cells can be checked. By testing the urine routine, a preliminary judgment can be made about the body’s diseases. If there are red blood cells, there may be bleeding. If there are white cells, there may be inflammation. If there are tumor cells, there may be a tumor in the urinary system. If there is proteinuria, it suggests that there is nephritis. If there is acidic urine, give full consideration to the presence of tuberculosis.