As a fixed layout of newspaper,supplement not only reflects the times,but also has relative independence.This paper focuses on the supplement of Ta Kung Pao(1916-1925)in Wang Zhi Long's period,starting from the basic sociological proposition of"How are the prime force and the structure negotiate",combined with the background of warlord politics,and discusses the mutual re-striction and active role of"structure"and"the prime force"in the two pairs of interaction between the internal and external organizations of newspapers and periodicals.The findings are as follows:as the prime mover of the newspaper,the newspaper as the power center,both play a positive and active role;The structure of the newspaper as the newspaper,the power center as the structure of the newspaper,played a negative restricting role in the development of the supplement.Through the analysis of struc-ture and motive force,this paper attempts to give a more objective evaluation to the supplement of Ta Kung Pao during Wang Zhilong's period.We should not ignore its limitation and negativity in a parti-cular era,but also should not erase its objective existence of enthusiasm and innovation,we should see the progressive ideas and the pursuit of national rejuvenation in the supplement,as well as the positive significance and influence on the society and politics at that time.On the whole,during Wang Zhilong's period,the keynote of the topics election of Ta Kung Pao Supplement was patriotic,enlightening and progressive,and the content was close to reality,life and the masses.