Bowel cancer is a common malignant tumor, which mainly includes colon cancer and rectal cancer. The length of time a patient with advanced bowel cancer can live varies from person to person, depending on the individual’s physical quality and whether he/she is actively treated. If the patient actively cooperates with treatment, has adequate nutritional supplementation, has stable physical signs and has a good state of mind, he or she may have 2-5 years of survival time, but the survival rate of more than 5 years is basically below 20%. However, if the disease has reached advanced stage, the cancer cells have basically spread to the whole body and cannot be completely treated through surgery. At this time, survival can only be prolonged by radiotherapy, chemotherapy, palliative care, etc. If the patient is not in good health, has malnutrition or high blood pressure and heart disease, and does not have good effect on targeted drugs and immune drugs, the survival time may be only a few months to a year. In addition, individual patients may be extremely thin and unable to eat when they are found to have bowel cancer, and their survival time may be even shorter if their family members give up treatment. Patients with advanced bowel cancer are advised to maintain a good attitude and actively cooperate with treatment. If patients have to recuperate in bed at this time due to physical weakness, family members should pay attention to helping patients turn over regularly, move their limbs in bed and discharge sputum in time to improve their quality of life, which can help delay the development of disease and prolong survival time.