Concrete Structure is a core course of civil engineering with strong theory and practice.Taking the post epidemic period of the deep integration of "Internet plus Education" as the background, on the basis of the existing research results and research, combined with the current teaching situation, respectively from the aspects of the clarity of mixed teaching objectives, the reconstruction of online and offline teaching content, the innovation of teaching methods, the improvement of assessment methods, the construction of teaching quality evaluation system and continuous improvement mechanism, etc. To carry out the research on the teaching reform and practical innovation of the course Concrete Structure, so as to provide reference for the normal development and continuous improvement of online and offline mixed teaching in the post epidemic period.