Diet needs to eat nutritious (now he is weak and needs to nourish his body), digestible (nutrition is easy to absorb) and less residue (reducing the burden on rectum and providing time for rectal repair), such as egg soup, milk, tofu soup and so on. Now don't eat foods containing a lot of fiber (such as celery, miscellaneous corn, millet, sorghum, buckwheat, oats, cassava, sweet potato, arrowroot, soybean, mung bean, red bean, pea, cowpea, broad bean, soybean sprout, celery, leek, garlic sprout, day lily, Toona sinensis, green pepper and edamame). Walnut, peanut, auricularia auricula, mushroom, shiitake mushroom, corn flakes, eggplant, kelp, laver, Nostoc flagelliforme, laver, agar), so as to avoid being difficult to digest, and food residues are introduced into the large intestine, which leads to an increase in rectal burden. lma0825@ 163.com