The separation of powers has become the basic consensus of any country's design and governance system. Although it is customary to distinguish between the presidential system and the cabinet system when discussing the state system, the fundamental problem is to explore the relationship between the executive and the legislature. Japan is the country that implements the house cabinet system, but Japan is particularly called that symbolic emperor system. Under this unique system, Japan's national form is monarchy or republic is still a question. The Japanese Constitution stipulates that the National Assembly is the ＂supreme organ of state power＂ and the ＂state's only legislature.＂ The Constitution gives the Cabinet the power to submit bills. Therefore, Congress has the greatest political power, but most of the bills established by Congress are proposed by the Cabinet. In fact, the bill proposed by the Cabinet was drafted by the administrative organization of your own genus. In particular, the appointment of the Minister became a tool for the distribution of the power of the sentiment. The bureaucratic-centered administrative state phenomenon was very significant. Therefore, Japan has always had efforts to promote ＂administrative reform.＂ Under the influence of the Act's preliminary review system, the actual power of the prime minister is weakened. In order to solve these problems, the solution that Japan has considered is administrative reform and direct election of the prime minister. This article aims to discuss Japan's special house cabinet system and the impact of administrative reform and direct election of the prime minister.