Patients who have diarrhea after taking white fungus should consider that the patient has acute gastroenteritis or infectious diarrhea. This condition will have a large amount of white fungus taken, especially if it has not been cooked or processed and cooked in an incorrect way, which will cause the patient to have a large amount of toxins into the blood, at which time there will be clinical symptoms such as nausea, vomiting, abdominal pain, diarrhea, and also obvious colic around the navel. In severe cases, the patient may become dehydrated to varying degrees, and further tests such as emergency blood tests, full C-reactive protein, and renal function tests are required. If the patient has obvious water-electrolyte and acid-base balance disorders, timely rehydration treatment with 0.9% saline and 5% glucose injection, as well as anti-inflammatory drugs and drugs to protect the gastric mucosa should be given as appropriate for comprehensive treatment.