After heatstroke, vomiting and diarrhea may be caused by the weakness of the body during heatstroke, thus infecting some intestinal bacteria, or gastrointestinal disorders of the intestines. If the diarrhea is more severe, you can give montelukast to stop the diarrhea. Usually, this condition is accompanied by abdominal pain, which can also be treated with scopolamine or scopolamine to relieve spasm and pain. In addition, some proprietary Chinese medicines for heatstroke are also effective for vomiting and diarrhea, such as patchouli, which can have the effect of relieving heat and dampness and stopping diarrhea, as well as treating some symptoms of heatstroke. If fever is present, acetaminophen and ibuprofen can be given to reduce heat treatment. Replenish water electrolytes via oral/intravenous if necessary.