Diarrhea after heatstroke may be caused by heatstroke that affects the function of the gastrointestinal tract, resulting in gastrointestinal tract dysfunction. It is also possible that after heatstroke, the body’s immunity decreases, leading to gastrointestinal tract infection and the appearance of acute gastroenteritis. Be alert to bacillary dysentery. In addition to the general treatment of heatstroke, such as drinking more water, light salt water, etc., the symptoms of diarrhea can be given oral montelukast to stop the bleeding treatment, you can also apply probiotics such as bifidobacterium to regulate the dysbiosis of the gastrointestinal tract, which also helps to relieve the symptoms of diarrhea. You can also take Chinese medicines, such as Huo Xiang Zheng Qi Shui, Rectify Intestine Pill and Horn Zheng Lu Wan, which have better effect on abdominal pain and diarrhea caused by heat stroke. If the acute gastroenteritis is caused by infection with bacteria, antibiotics, such as third-generation cephalosporin antibacterial, quinolone antibacterial anti-infective treatment, should also be applied.