This paper aims to achieve the effective application of multimedia technology in high school biology teaching.We used questionnaires to investigate students'interest in biology and their class state.We respectively chose the contents of"cell differentiation,senescence,apoptosis and cancerization"and"Mendel's pea hybridization experiment,meiosis and fertilization"in high school biology textbooks,and conducted contrastive teaching between two comparable classes,and then used interviews and questionnaires to explore the teaching effect of integrating multimedia teaching into high school biology t...