In order to find the true values of the traditional culture and historical experience on the guidance of present united-front work, this paper reviews the united-front activities during the Hanwudi time and reveals the theoretical basis of his activities, the concept of the ideal personality, the humanistic views of human nature, the sense of harmonious society so as to seek the common ground while reserving the concept of civilization constitute of the resources. The success of Emperor Hanwudi united-front strategy tells us that paying attention to cultural construction and people-oriented, respecting the historical trend and adhering to the dialectic of comprehensive world view are very important to the present united-front work.