Abstract:Construction of first-class course is an inevitable requirement for universities to strengthen education and teaching and improve the quality of talent cultivation in the new era. Blended teaching is an effective way to promote the construction of first-class courses. The teaching team of "General Plant Pathology" has actively advanced the construction of "First-Class Course" by reforming blended teaching and by combining ideological and political education and professional knowledge education, online teaching and offline teaching, theoretical teaching and practice innovation, teaching steps and information technology, and diversified assessment and teaching process. Moreover, we also try to build an excellent teaching team, enrich curriculum resources, compile text books, and establish a scientific assessment system. The above efforts have effectively promoted the construction of first-class courses and allowed the courses to be rated as national first-class online-offline blending course.