Connection is the essence of Internet. So the development of Internet means the evolution of Connection. Before the Web1.0 time, the connection of computers resulted in a Network of Terminal. For the web1.0, a Network of Content emerged due to the use of hyperlink. When Web2.0 comes, the individuals  online are connected to a Network of Relationship, which is interacting with the Network ofContent at the same time. And now, a Network of Service is forming because of the rise of online shopping, online education and online medical service. Web3.0 mayexpand the way contents used to be linked and make all objects collected to Internet.In conclusion, the developments of the four networks and the change of the relations between them will lead to the continuous growth of Internet.