The three routines are blood routine, urine routine and stool routine, as follows: 1, blood routine is the blood analysis in the blood test, check the white blood cells, red blood cells and platelets, can find out anemia, can also find leukemia, find aplastic anemia and other serious diseases, have a strong prompt role, so this is the basic test. General awareness of blood routine is actually consistent and must be done; 2. Urine routine is an important test to detect kidney disease, because kidney disease starts insidiously without more discomfort leading patients to see the nephrology department, and urine protein is already found in the urine when checking. If we don’t do this test, we can’t diagnose kidney disease in early stage and miss the opportunity of early treatment, and it is troublesome to find out kidney disease in late stage. 3. If there is occult blood in stool, then go for gastroscopy or colonoscopy for further examination, because gastroscopy and colonoscopy are after all invasive and expensive, so it is impossible for everyone to do gastroscopy and colonoscopy directly. Doing stool examination first and having problems with suspicion of occult blood positive and possible tumor before going for gastroscopy will save most of the negative people from having to do gastroscopy. That is why stool examination is also necessary as a basic test.