Since the invention of computer, the world has come to the information stage. Today, people can do almost all the things through the Internet. They work and shop and communicate by this convenient way. As the information can be received from all kinds of resources, some people choose to search the Internet to get the diagnose before they go to see the doctor. If the doctor tell them something that is different from what they see from the Internet, then they will question about the diagnose. Online medical service indeed helps people to get the idea of their sickness, but it can’t be trustworthy, because who knows whether the information is given by a professional doctor. What’s more, the accurate diagnose should be checked the body, while online diagnose can’t offer this service, so it is unreliable.