化学实验是中学化学教学中主要手段.由于不同地区实验条件的限制,实验的探索性和操作性的特点在教学中很少能够真正体现.这样教材上安排的一些实验就不能满足学生的认知需求,为了解决这些矛盾我们随之采用了多媒体的教学方法使问题得到很大的突破,但是多媒体的诸多好处,也不能掩盖它的不足、弊端. Chemical experiment is the main method in middle school chemistry teaching. Due to the limitations of experimental conditions in different regions, the exploratory and operational characteristics of the experiment can rarely be truly reflected in teaching. Some experiments arranged on the textbook cannot satisfy the students’ cognition. Demand, in order to solve these contradictions, we subsequently adopted a multimedia teaching method to make the problem a great breakthrough, but the many advantages of multimedia can not cover up its shortcomings and disadvantages.