In modern China,we have experienced different constitutional modes which achieved great success in western country. However,none of them brought constitutional government for Chinese people. GMD government drafted Chinese Constitution according to Sun Yat-sen ’ teachings and recruited Roscoe Pound as legal adviser. Instead of political morality and political powers,Pound tried to take the interpretation and application of Constitution as the right way to constitutional government. As his analysis,the Three People’s Principle means Nation Unity,Bills of Rights,Service State. This interpretation just parallel with Sun’s omnicompetent government and People ’s rights. From this perspective,Pound tried to find a solution to keep balance between security and freedom in service state which sharp expansion of administrative power was inevitable. Pound suggested that strong and independent Judicial power,limited Legislation,expansion and controlled administrative power is the way to protect and develop civilized society and constitutional government for China.