During the critical period of improving the quality of higher vocational education,students'academic achievement has become a core indicator for measuring educational effectiveness.This study focuses on the influence mechanism of teachers'classroom emotions on students'academic achievement in higher vocational colleges and conducts an in-depth discussion using grounded theory.The study finds that positive emotional interactions between teachers and students can not only promote good teacher-student relationships but also directly affect students'learning attitudes,skills,motivation,and learning engagement,thereby exerting a positive influence on students'academic achievement.Therefore,it is recommended to emphasize cultivating positive emotional interactions in teaching practice and fostering supportive teacher-student relationships,which is crucial for enhancing students'academic performance.