Material Synthesis and Preparation Technology course is an important professional course for materials chemistry majors The course is set up to enable students to master the basic principles and related technologies of material synthesis and preparation . The teaching of the course is conducted teaching form mainly by teachers. In order to improve teaching efficiency and effects , combined with the rapid development of online education at this stage , the online and offline mixed teaching mode is adopted to encourage students to participate in the teaching process . Through teaching practice , the online and offline mixed teaching model has been proved to have outstanding advantages in increasing teacher-student linkages and enriching the assessment mechanism . The teaching effect is good , and the students academic performance has improved significantly