Abstract: Engineering Mechanics is a core fundamental course for numerous engineering majors, providing both theoretical and practical foundation in mechanics for further studies in engineering majors. The course is characterized by its high degree of logic, theory, and systematic structure; however, this often leads to student experiencing feelings of boredom and helplessness. Consequently, establishing a connection between knowledge and practical application proves to be quite challenging. Based on the analysis of practical demands and students' learning conditions, this paper addresses the problems existing in traditional teaching and proposes an innovative approach for engineering mechanics reform, which emphasizes "the integration of digital intelligence empowerment into practice and the application of knowledge being of paramount importance". In line with the teaching philosophy of "student development-centered" and "application-oriented", and guided by the theory of "constructivism", this paper expounds the reform measures in three aspects: teaching content, teaching mode and teaching evaluation. And taking specific class cases as examples, it is illustrated that the "application-oriented blended situational teaching" created based on learning science has established a closed loop of "learning online and applying offline". This reform not only reflects the deep integration of information technology and education and teaching, but also effectively serves as a "scaffolding" for teachers, thereby stimulating students' goal-oriented learning.