Abstract: The traditional personnel management has widened its border, and is called human resources management now.The human resources management in public sector refers to the management of human and post in the public sector and the policy formulation.It has been the main section for a long time.There are at least five independent systems whose relations are tensional at the same time in the human resource management for public sector of America.One of them has different agenda in human resource.They are civil servant system, collective system, political ruling system, lifelong system of professionalism and public administration system of professionalism.The professionalism system for public human resource management of America is made of lifelong system of professionalism and public administration system of professionalism.