Abstract: In order to improve the teaching level of Crop Science Experiment, this paper takes the teaching situation of Crop Science Experiment as an example, and carries out online-offline blended teaching for the crop science experiment course. The teacher records the experiment teaching video and releases it on the rain classroom platform for the students to study before class. According to the content of the experiment, the corresponding reflection questions are set and released after class to check the students' learning effect. At the same time, the rain classroom discussion area is opened for teachers and students to interact with each other. This teaching mode greatly improves the students’ interest in learning, reduces the experimental misoperation, and enhances the students' hands-on ability and their innovation ability.

Key words: Crop Science Experiment, online and offline, blended teaching, teaching video