Health rumors are health-related rumors spread through WeChat or Weibo. In the circle of friends, various "life tips" emerge one after another. Some people say that eating fungus can prevent smog, and some people say that vegetable oil can cause cancer. In addition, there are some "clear lung remedies" circulating on the Internet. The most common foods are auricularia auricula and pig blood. However, according to experts, there is no scientific basis for these two foods to "clear the lungs". WeChat official account uses readers' psychology to promote a series of health knowledge that can't tell the truth from the false, so as to increase the number of clicks, sell advertisements and maximize their own interests. These pseudo-scientific rumors have also caused distrust in interpersonal communication, and the circle of friends is full of smoke. ?