This article is based on the constitutional government theory of human nature, the theory of separation of power, the theory of equilibrium, and the concept of the power and duty corresponding. In addition to discuss the relationship of the system and power of office between Executive Yuan and Legislate Yuan in our constitution and 4th times amended in 1991, 1992, 1994, 1997. This article comes at the western society emphasize the gloomy human nature and power restrict are the main ideas to establish a constitutional government. Therefore government the separation of power, check and balance, and the power and duty will easy to make them clear. Therefore our country is focus on the human nature and enhance power to division of work and cooperation. In addition, the timing to restrict a constitution and for long term consider, under the system to suppress a rebellion. The devise principles is based on politics stable. However, the government power in the constitution is emphasized on division of work but too lack of restrict. Administration power is typically greater than the legislate power. Also give the president emergency order power after revised the constitution. The country's safety guiding policy was design to direct designate the premier power to revise the constitution and that caused duplicate administration center and it also appear a national assembly, Control Yuan and Legislate Yuan to share the legislative power. In the system of double headed and multi-body, the power and duty of Executive Yuan and Legislate Yuan both incure weakness. Therefore, how to face squarely restrict of the human nature and rights and to strengthen the job of Legislative Yuan (or the name of future congress) works efficiency. That can sufficient to restrict the power of Executive Yuan and the president to achieve a constitutional government principle of consistent in power and duty.