Abstract: Aiming at the problems of substantial class hour compression of the theoretical mechanics course in universities, poor adaptability of the traditional full-coverage teaching mode to the talent training of civil engineering majors, and the disconnection between theoretical knowledge and engineering practice, this study carries out curriculum restructuring and teaching reform based on the core training requirements of civil engineering majors. A differentiated teaching system dominated by statics and streamlined with kinematics and dynamics is constructed, with professional civil engineering cases integrated and diversified visualized teaching as well as online-offline blended teaching methods adopted. Comparative teaching experiments verify the reform effects. The results show that the proposed reform scheme can effectively improve students' classroom participation and academic performance, balance the overall learning level, and adapt to the teaching requirements under compressed class hours, providing a reference for the teaching optimization of theoretical mechanics for civil engineering majors.