Based on a multimodal topic network, this paper constructs a knowledge combination model for the cross-discipline of public sports and civic politics. Through multimodal data fusion, the knowledge combination between the two kinds of public sports courses and Civic and political education in colleges and universities is obtained. Finally, using the China Knowledge Network database as the source of data retrieval, the hot spots and their evolution paths of Civic Politics in public sports courses were explored so as to excavate the elements of Civic Politics in Civic Politics of Public Sports Courses. The results show that among the elements of ideology and politics in the curriculum, “patriotism education” has the greatest emergence intensity, with a value of 49.382, followed by “establishing moral character” with an emergence intensity of 16.338, which indicates that the main purpose of the construction of the elements of ideology and politics in the physical education curriculum is to cooperate with the orientation and requirements of ideological and political education, which is the most important part of the public sports curriculum. It shows that the main purpose of the construction of the ideological and political elements of the physical education curriculum is to match the orientation and requirements of ideological and political education and to clearly link the goal of one’s struggle with the destiny of the state and nation.