This book is for the purpose of studying the non-governmental organizations appeared in the Chinese Mainland along with the reform and opening for 30 years, and then opens out the social changes caused by the development of non-governmental organizations. Author tries to estimate, grasp and summarize the development of non-governmental organizations and the changes brought by the development from different angles of view in the historic progress, the citizens' rights, the system vicissitude, the governance structure, the relations between non-governmental organizations and government, the relations between non-governmental organizations and society, the relations between non-governmental organizations and political reform, and the overall vicissitude of state and social relations etc., and reaches a conclusion which the development of non-governmental organizations is impelling China towards the civil society since reform and opening for 30 years.