High summer temperatures, high humidity, mosquitoes, flies, the growth of pathogenic microorganisms, reproduction accelerated, food is easy to deteriorate, easy to drink raw water, raw and cold food, inducing digestive tract diseases. Digestive tract intestinal transmission disease pathogens through the oral invasion of the intestinal tract, causing intestinal infection, fecal-oral transmission is the main transmission route of such diseases. Once trapped, abdominal pain, diarrhea, nausea, and vomiting can occur. Common intestinal infectious diseases, including cholera, bacterial dysentery, typhoid or paratyphoid fever, hepatitis A, hepatitis E, other infectious diarrhea, acute hemorrhagic conjunctivitis, hand, foot and mouth disease, and amoebic dysentery are all common infectious diseases in summer.