This paper explores the background and development of the religious legislation in Contemporary Taiwan. A triangle framework of statereligion-society is used to analyze the need and its extension to legislate a new religious act. A new religious act is needed for the state to control the dissent Christian group and new religious groups, is needed for the whole society to satisfy the function of "social control", and is more needed for the religious bodies to resolve their own problems produced by an unreasonable religious administration. Because the state is less politically motivated in the legislation process, the religious act drafted by the state is more possible to be accepted by the religious bodies. The main content and development of "Act of Religious Groups" drafted by the Ministry of Internals is discussed. Some difficulties about the property and framework of religious corporate, the balance between religious liberty and administrative supervision, and the controversy of tax exemption and commercialization of religious services remain unsolved.