The foods with the function of clearing intestine and expelling toxin mainly include yogurt, vegetables, black fungus, sweet potato and so on. Adding beneficial bacteria in the production process of yogurt and drinking yogurt properly will help to adjust the balance of intestinal flora, promote intestinal absorption function, protect intestinal health, and help to excrete feces after drinking yogurt. Vegetables contain a lot of dietary fiber, which will not be absorbed by human body, and have the function of promoting intestinal peristalsis, and can absorb toxins in the intestinal tract during the elimination process, and the effect of clearing intestines and removing toxins is good. Auricularia auricula is rich in iron and minerals, and its dietary fiber content is particularly high. After entering the intestine, the garbage in the intestine can be excreted. Sweet potato is rich in vitamins and minerals, which can stimulate intestinal peristalsis, help intestinal excretion, and also strengthen the spleen and nourish the stomach.