化学是一门以实验为基础的自然学科。中学化学实验课在学生学习、了解和认知化学的过程中有着举足轻重的意义。但长期以来,中学化学实验基本上是以教师做、学生看的方式进行。在这样的过程中,学生不了解整个实验的步骤、实验器材的使用、实验操作的规范性,大大抑制学生对化学学习的兴趣,对实验技能的提高也没有帮助。异步教学法提倡学生为个体、教师为主导,发挥学生的主观能动性,培养学生的实验技能,提高学生 Chemistry is a natural discipline based on experimentation. Chemistry experiment class in high school students learning, understanding and understanding of chemistry in the process of decisive significance. But for a long time, chemistry experiments in middle schools have basically been conducted by teachers and students. In this process, students do not understand the steps of the experiment, the use of experimental equipment, the normative operation of the experiment, greatly inhibit students’ interest in chemistry learning, and do not help to improve the experimental skills. Asynchronous teaching method to promote students as individuals, teachers as the leading play of students ’initiative, develop students’ experimental skills, improve students