With the rapid development of China’s economy, people’s living standards continue to improve, living habits and dietary structure also changed, more and more people are suffering from anorectal diseases. In the market economy environment, the overwhelming advertisements for the treatment of anorectal diseases also make people dazzled and confused! The patient has seen advertisements to buy drugs from pharmacies to treat themselves, or listened to the exaggerated words of the advertisements and went to private small hospitals for treatment. This will cost money and suffer, not to say that the disease is not cured, and some even delayed the disease, paying the price of life! The business elite Mr. Zhang is 43 years old, long-term heavy work pressure, endless work should chip, twenty years of spell to build a brilliant and successful business, many halo also enveloped him. But in the past year, he often felt abdominal pain, anal swelling, and blood in the stool, the number of bowel movements gradually increased and other symptoms. One day, he was driving and was suddenly attracted by a roadside hospital billboard – “computer laser painless treatment of hemorrhoids, no hospitalization, no surgery, no pain”, a heart yearning for health was struck, he got out of the car and walked into the hospital, the doctor just briefly asked The doctor simply asked him about his condition and then performed the surgery on him. But unfortunately, his condition still did not see any improvement. He began to lose confidence in life after a long illness. But at this time, things took a turn for the worse. After being introduced by a friend, he came to the Department of Proctology with the psychology of giving it a try, and after a detailed scientific examination by the doctor, he was diagnosed with rectal cancer and soon underwent surgery. Mr. Zhang regretted and said, “If I had come to Hai Ci Hospital earlier, I would not have used my hands for so many crimes! Mr. Zhang is always fond of big fish and meat, especially cured food such as red sausage and cured fish and meat, but rarely consumes fresh vegetables and fruits, plus excessive smoking and alcoholism due to company social functions, which has planted a huge hidden danger to the health of the old Zhang. In fact, we can see from Zhang’s body that poor lifestyle and diet are important causes of colorectal cancer, so which symptoms remind us that we should go to hospital as soon as possible? — 1. change of stool habit, increase of stool frequency or constipation and alternation of constipation and diarrhea, feeling of swelling in the anus 2. blood in stool, usually bright red and jam-colored, is the most common symptom of colorectal cancer 3. intestinal obstruction with abdominal pain 4. abdominal masses are commonly found in the right hemicolectomy and ascending colon 5. systemic symptoms Compared with other tumors, colorectal cancer has better curative effect but high clinical misdiagnosis rate, and many patients are already in advanced stage when diagnosed, in many developed countries, gastrointestinal endoscopy has become a health fashion. According to statistics, nearly 80% of colorectal cancers in China are misdiagnosed and mistreated to different degrees, so it is urgent to advocate the “three early” concept of “early detection, early diagnosis and early treatment”. At present, the screening methods for colorectal tumor include: barium enema, fecal occult blood test and colon endoscopy. Especially for the key groups, special emphasis should be placed on their “three investigations”.