Before 1978, Chinese dam policies were tallied with the political movement ¡§Big Leap¡¨, people all obeyed the order no matter they were under the situation of lacked of instruments. Sanmenxia can be a special sample. ZhouEnlai¡¦s chrisma made people did their best on dam projects. This could be said that dam construction policies were methods to show the authority of the leader and the state. And further, under the system of people¡¦s commune and SOEs, the state can totally control the society. After executing the opening reform policy in 1978, social organizations were in bud in China. Since 1994, environmental non-government organizations (ENGO) dramatically grew up and played an important role in anti-dam movements, in addition the international non-government organizations joined the movement, and then the two kinds of organizations became transnational advocacy networks. However, the transnational advocacy networks successfully stopped the projects of Nu River and Hutiaoxia. In this study, the documentary analysis is the key research methodology and the dam construction is the case to illustrate the purpose of constructing dam in China. Furthermore, this thesis would make a description of the reasons of anti-dam movements, the emergence of NGOs and ENGOs, and the cooperation with INGOs to confer the transforming State-Society relations in China.