In the process of China's Internet development from scratch, from weak to strong, and realizing rapid development, several generations of Party leaders in different periods, according to the focus of the work of the Party and the state and the actual needs of the development of the Internet, timely put forward a series of views and conclusions on the Internet, which has promoted the progress of China's Internet and formed and enriched the Internet thinking of the CPC's Thought on Internet. The paper points out that Deng Xiaoping was the key leader to open the door to the Internet in China; Jiang Zemin founded the basic thought of Internet development and management in China; Hu Jintao expounded the new characteristics and laws of the development of the Internet in the new century; Xi Jinping opened a new era for China to build a strong network country in the world.