Cancer patients can drink milk. Milk contains protein and amino acids needed by human body, and it is good for human body. If the patient’s gastrointestinal tract reaction is serious during radiation and chemotherapy, eat some light, easily digestible food first, and then strengthen the nutrition when the reaction disappears to replenish energy for the next treatment. If you have constipation, you can also eat more vegetables and fruits, and you can also take laxative drugs in advance. If the patient is in the end stage of tumor, the patient’s body condition is particularly poor and the digestive function is almost not working, so the food cannot be digested and absorbed in the body, so it is likely that it is better not to eat than to eat.