Bureaucracy prepares a good way to achieve main objectives within Iran's 20- year perspective document. Studies show that Iran's bureaucracy has serious problems caused that the government, officials, civil servants, and the public have been dissatisfied. Therefore according to the modern management theories, constitutional principles, and socio-political conditions, the bureaucratic system must be reformed necessarily, it emphasized. In this connection, the amendment of bureaucracy and employment Acts were put on the current government's agenda that as a result of it, civil services management bill was submitted to Islamic Consultative Assembly. After many discussions taken three years, the bill was approved by the parliament. The Act consists of human resources management laws such as recruitment, employment, organizing, reconstruction, organization, retirement, civil servants' payments, and as a whole people's rights. Its all preparation, codification, and ratification processes done according to modern management theories world wide such as good governance, modern state, valuable experiences gained by different countries, and constitutional principles within Islamic/Iranian- oriented laws. The article spots the strengths and weaknesses of Iran's bureaucracy that necessarily it must be reformed and outlines the principles, achievements, and modern management theories. Then it discusses about principles of the Act which are restricted to definitions, strategies, and the performance of government's duties technology, organizational structure and finally, its possible achievements have been predicted after the Act was enforced.