Along with the continuous improvement of people’s living standards, people’s living habits are also constantly changing, and the fat and protein in the body are not short increasing, and the intake of fiber is too little, which directly leads to the continuous increase of colorectal love. Colorectal cancer is one of the malignant tumors of the gastrointestinal tract, and in recent years, colorectal cancer in China tends to be younger. Therefore, it is especially important for colorectal cancer how to achieve early detection and early treatment. The following are some warning signs of colorectal cancer: a. Family history of colorectal cancer needs special vigilance. Those with family history of colorectal polyp need to be alert to cancer. Patients with adenomatous polyps need to be alert to cancer. Patients with colorectal cancer need to be especially alert to multiple primary cancers of the colon or recurrence of bowel cancer after surgery. V. Patients who have suffered from other gastrointestinal tumors in the past need to be especially vigilant, because they are often the same as the cause of colorectal cancer. People above middle age should pay attention if they do not want to eat, have no energy and become thin. People who have no other blood loss and blood diseases should pay attention to anemia and pale face. If you do not know why your stool is not normal, for example, you feel that you cannot finish your bowel movement, your stool is hard and rotten later, or you have a lot of stools, you should be alert to colorectal cancer. Abdominal pain, abdominal discomfort or hidden pain at the beginning of the disease, which is related to bowel movement. Warm tip: The above content is for reference only, please refer to clinical diagnosis for specific conditions.