Engels summarized the historical process of social development as the theory of historical resultant force from the perspective of the interaction of various forces, which made important contributions to helping people correctly understand, understand and apply historical materialism. According to Engels' theory of historical resultant force, man is the subject of practice, the playwright and figure of history, and everyone contributes to the resultant force of social and historical development. The people-oriented thought from the perspective of historical resultant force theory is that society and individuals return the human world and the relationship between people to themselves and realize the real liberation of people, that is, everyone's free and all-round development. It is the state of human life under the conditions of communist society. In this state, both society and individuals know who is people-oriented, who is people-oriented, what is people-oriented, and what this is. Everyone has achieved the perfect combination of their own tool value and purpose value, and the dialectical unity of historical drama writers and characters. This people-oriented idea, which aims at realizing everyone's free and all-round development, is like a banner flying high, eagerly showing people that only when everyone realizes people's free and all-round development can he enter the real state of human existence and become a conscious and real master of nature; Only by putting people first in this sense can everyone make greater contributions to the development of social history and promote the smooth progress of social development in the right direction.