The main reason of Swine flue spread so fast in the world is the virus which is easy to transfer through touching hand and public facilities. Viral marketing has a same theory that Message need to be easy to transfer and the media which carrying the messages need to be easy to transmit and replicate. Therefore, the digital format materials and the free and instant communication platform, Internet, efficient the Viral marketing’s development. Topical examples are e-mail, website, graphic and software download. Also, the short and attractive message will be advantage on spreading the message.