The dishes used by bowel cancer patients are not contagious. Bowel cancer is a process of malignant transformation of intestinal epithelial cells, not caused by single-factor virus or bacteria. Bowel cancer is caused by genetic abnormality in the process of repairing intestinal mucosa cells by external stimulation, which leads to epithelial cell cancer. Infectious diseases are caused by specific pathogens, such as viruses, bacteria, fungi or parasites, etc. Infectiousness is the main difference between infectious diseases and other types of diseases. There is a fundamental difference between bowel cancer and infectious diseases. Bowel cancer is not contagious, while cancer infection may be caused by viruses, including bacteria that directly cause cell cancer, such as cervical cancer, the main triggering factors of which are HPV infection and human papilloma virus infection. Cervical cancer is contagious, and Helicobacter pylori is an important factor in the development of gastric cancer, so diseases that induce tumors by specific viruses and bacteria are prone to transmission, but bowel cancer is not contagious.