Diarrhea in everything you eat could be bowel cancer. Prolonged diarrhea like this needs to be considered as a possible bowel cancer. Of course, it may also be other intestinal inflammation, other benign intestinal lesions, so this symptom alone can not determine whether it is cancer or not, but also combined with other test results, such as imaging to find out whether there is any thickening of the intestinal wall, as well as tumor markers to see whether the carcinoembryonic antigen (CEA) has been elevated more. If carcinoembryonic antigen is elevated, it is possible to consider colon cancer. The definitive diagnosis must be made by colonoscopy and pathologic examination. If the tumor is in the rectum, anal fingerprinting is also very easy and intuitive. Generally speaking, after diagnosis of bowel cancer, surgery is the main treatment, and after surgery, radiotherapy, chemotherapy and other comprehensive treatments are also needed. Of course, after surgery, the diarrhea symptoms should get better. If it is caused by other intestinal inflammation, it needs to be treated with medicines for treating intestinal inflammation, regulating intestinal flora and stopping diarrhea.