You can eat after diarrhea, but it is best to start with foods that do not contain fat, such as millet porridge, rice porridge or oatmeal porridge, and in small amounts. Because the above-mentioned porridge will not irritate the gastrointestinal mucosa and will not aggravate the burden on the gastrointestinal tract, it will not cause the diarrhea symptoms to worsen. After the diarrhea is gradually relieved or the diarrhea is completely recovered, you can resume your normal light diet. Diarrhea is mostly caused by improper diet, such as indigestion after an unclean diet or overeating, which leads to diarrhea. For relatively mild diarrhea, it can be observed temporarily and does not require medication. If the diarrhea is more frequent, you can also prepare your own probiotic oral treatment, such as oral Clostridium typhimurium tablets or Bacillus subtilis capsules, etc., the specific medication needs to consult the drug instructions in detail. In terms of diet, the requirements must be based on a light diet.