In order to realize the teaching concept of students as the protagonist,combined with the demands of process control and practical content teaching in the online teaching of Damage Mechanics,with the teaching ob-jectives of improving students'in-depth understanding of basic knowledge of warhead and its damage effect and forming scientific understanding of efficient damage of weapons,based on the teaching theory of flipped class-room,the research-based teaching design method of flipped classroom for Damage Mechanics was discussed,and a new flipped classroom teaching model of"multi-dimensional"online and offline interaction was established,which integrated ideological and political guidance,"heuristic"problem chain drive and demonstration and simu-lation practice,and opened up the knowledge link of students from weapon principle to combat application.It cul-tivates the students'ability of independent learning,integration,solving practical problems and innovative prac-tice,and improves the teaching effect of Damage Mechanics.