Some rectal cancer patients would like to eat sea cucumber to help their treatment after surgery, hoping to recover soon. So, can you eat sea cucumber after rectal cancer surgery? Does it have any effect? Rectum is an important digestive intestinal tract of human body, the main function of which is to absorb water and store food residues to form feces. The normal defecation function of rectal cancer patients is seriously damaged, so the post-operative dietary conditioning of rectal cancer is especially important. Sea cucumber contains protein, calcium, potassium, zinc, iron, selenium, manganese and other active substances, and other active ingredients in the body of sea cucumber include sea cucurbitacin and acidic mucopolysaccharide composed of amino acid, glucuronic acid and alginate, etc. It also contains 18 kinds of amino acids and does not contain cholesterol. Because of its warm nature, sea cucumber can nourish the kidney and essence, nourish Yin and Yang, nourish blood and moisten dryness, regulate menstruation and dispel labor, and nourish fetus and facilitate labor. Patients should pay attention to eat more vegetables rich in dietary fiber in the post-operative diet of rectal cancer, such as celery, leek, cabbage, radish, etc. These vegetables rich in dietary fiber can stimulate intestinal peristalsis, increase the number of bowel movements and take away carcinogenic and toxic substances from feces. If rectal cancer tumor is found to bulge into the intestinal cavity and narrow the intestinal cavity, the intake of dietary fiber should be controlled because excessive intake of dietary fiber can cause intestinal obstruction. A small amount of sea cucumber can be eaten after rectal cancer surgery, which can help assist in treatment. Patients are advised to consult a pharmacist and consume sea cucumber reasonably under the guidance of the pharmacist.