It is not possible to say which one is easy to spread, colon cancer and rectal cancer are both malignant tumors, and their spread is related to the degree of differentiation. Both colon cancer and rectal cancer are malignant tumors, and their spread is related to the degree of differentiation. Colon cancer and rectal cancer are collectively called colorectal cancer, and their foci occur in different parts of the body. Both colon cancer and rectal cancer spread in the middle and late stages, and they can spread through lymphatic metastasis, implantation spread, and bloodstream metastasis to the bones, lungs, liver and other parts of the body. The main manifestation of colorectal cancer is abdominal pain accompanied by changes in bowel habit. Early stage colorectal cancer can be treated by surgery, and the cure rate is more than 90%. Colon cancer and rectal cancer can be completely cured through active treatment, but if not treated in time, it is more difficult to be treated after spreading in middle and late stages.