Hepatitis A can be transmitted by kissing on the mouth. Because hepatitis A is a digestive tract infection, it is mainly transmitted through the fecal-oral route. The saliva of hepatitis A patients is contagious, and it is possible to get infected with the hepatitis A virus when eating or kissing with a hepatitis A patient. In addition to eating or kissing, hepatitis A virus can also be transmitted through the hands, used daily necessities and tableware contaminated by patients with hepatitis A virus, and after heavy rain or rainy seasons when the patient’s saliva, vomit and other excreta contaminate the surrounding environment.