Many patients do not understand the routine examination of the anorectal department after admission, and even think that the hospital or doctor excessive examination, pit the patient’s money, there is resistance to the psychological. In fact, these tests are very important, can be early detection of a disease. Reduce the risk of surgery. Now give you some explanation, hoping that patients can have more understanding of basic medical knowledge, doctors, hospitals have more trust. 1, blood routine: to understand whether there is infection, anemia or other fluid system diseases. If there is a bacterial infection, the white blood cell and neutrophil values will rise, suggesting that there is an infection and anti-infection treatment is needed; if the hemoglobin value is lower than normal, it suggests anemia, and it must be determined according to the degree of anemia to determine whether or not the operation can be performed, what kind of anemia it is, and how to treat it. Occasionally, patients can be found to have “leukemia” and other blood system diseases through routine blood tests, so that they can be found as early as possible to avoid surgery and be treated as early as possible. 2.Urinary routine: suggests that there is no urinary tract infection, there is no diabetes mellitus. Some patients because of “urine sugar” higher found diabetes, and timely detection of diabetes is very important, because the patient’s blood sugar if not controlled, will affect the wound healing. 3, stool routine: to understand whether there is intestinal infection, inflammation, tumors, parasites. If the occult blood test is positive, we must be alert to the possibility of colorectal inflammatory diseases or tumors. Some patients were found colorectal cancer after checking electronic colonoscopy because of repeated positive occult blood test, so stool routine is very important. 4, liver and kidney function, electrolytes: it can understand whether the patient has diabetes or not, how the liver function is, whether it lacks trace elements. Many diabetic patients are often found through the abnormalities of “fasting blood glucose value” in liver and kidney function; in addition, some patients with long-term alcohol consumption or hepatitis have large abnormalities in liver function, and often need to do hepatoprotective treatment before surgery; some anemic patients can be found to have “iron” deficiencies in this examination, and if iron is deficient, it is important to have a routine stool examination. Some patients with anemia can find “iron deficiency” in this examination. If iron deficiency, together with other auxiliary examinations, can be diagnosed as “iron deficiency anemia”, and should be treated with iron supplementation. 5.Coagulation function and blood type: this is very important. Patients with poor coagulation function are easy to bleed during operation, and early checking of these coagulation functions can promptly exclude some contraindications to surgery, such as “hemophilia”, etc., which can avoid intraoperative and postoperative hemorrhage; blood type examination is also particularly important, because intraoperative and postoperative bleeding is a common complication, and some patients bleed heavily and must be given blood transfusion, and early checking of blood type can win valuable time for rescue. The blood type check in advance can win valuable rescue time. 6.Pre-operative examination: including hepatitis B, hepatitis C, syphilis, AIDS test. This examination is very important. Nowadays, the social mobility is big, the people’s sex concept is open, sex life is unrestrained, some infectious diseases and sexually transmitted diseases are very popular, and some diseases such as syphilis, AIDS, will seriously affect the healing of the patient’s wound after the operation; in addition, these infectious diseases can be infected to the doctors, nurses and other patients in the wards through the channels of blood transmission and so on, therefore, checking the preoperative examination in advance is very important. I did about 360 operations last year, of which 4 patients were found to have AIDS and a dozen were found to have syphilis; if these patients did not check the preoperative examination, they themselves and their doctors may never know that they have sexually transmitted diseases, which may continue to infect other people; in addition, these diseases also have a serious impact on the healing of the patient’s wounds, because these tests are done in a timely manner to stop the operation, to avoid the wound difficult to heal the embarrassing situation after the operation. The embarrassing situation of wound healing after surgery can be avoided. 7, ECG: can understand the patient’s heart function. Some patients are found to have congenital heart disease or myocardial ischemia because of electrocardiogram, so the operation can be stopped in time to reduce the risk. 8, chest X-ray: mainly can exclude tuberculosis, tumor. Perianal abscess, anal fistula and even hemorrhoids are often accompanied by tuberculosis, and occasionally there may be tumors. If accompanied by tuberculosis, it can seriously affect the healing of the postoperative wound. If it can be detected before surgery it can be stopped in time, in addition TB can be spread through the air, infecting doctors, nurses and patients in the ward . Last year, I found several cases of tuberculosis through chest X-ray examination and stopped these surgeries in time, which avoided the embarrassing situation of difficult healing of wounds after surgery as well as the infection of tuberculosis in the ward. 9, Anal diagnosis: 80% of the tumors in the lower rectum are found through anal diagnosis. 10, anal microscopy: anal papilloma, anal papilla hypertrophy, rectal polyps can be found in time.