Diarrhea two days after heatstroke may be caused by heatstroke itself, may also be acute gastroenteritis, inflammatory bowel disease and other diseases caused by the need for targeted treatment under the guidance of a doctor, such as general treatment, montelukast, levofloxacin, prednisone and other medications, surgical treatment and so on. 1. Heatstroke: after the occurrence of heatstroke phenomenon needs to be immediately removed from the high temperature environment, transferred to a cool, ventilated place, need to use wet towels to wipe the whole body bath, 4 ℃ saline enema and other methods to cool down, diarrhea symptoms can be used to stop diarrhea treatment of montelukast in case of serious symptoms. 2. Acute gastroenteritis: diarrhea symptoms are severe, you can use loperamide and other antidiarrheal drugs antidiarrheal treatment, accompanied by symptoms of dehydration need to rehydration therapy, bacterial infections can be used to levofloxacin anti-infection treatment. 3. Inflammatory bowel disease: diarrhea, abdominal pain and other symptoms, you can use prednisone and other glucocorticoids to control inflammatory activity, mesalazine treatment of mild to moderate active inflammatory bowel disease, if complicated by serious complications, such as intestinal perforation, the need for surgical treatment. In the case of diarrhea for two days after heat stroke, it is recommended to go to the hospital and ask the doctor to make a judgment and clarify the cause of the disease.