Abstract: Aquaculture water environmental chemistry is a theoretical basic course for aquaculture specialty. In order to realize the effectiveness of theoretical teaching of this course, our teaching team has carried out a series of reform, practice and exploration in the "effective teaching" of the theoretical course of aquaculture water environmental chemistry: Select double qualified teachers and external enterprise technicians to optimize the teacher structure; Teachers' scientific research achievements are integrated into theoretical teaching; Reform teaching means and methods, carry out leading-in teaching; Finally, it makes a bold reform on the way of student assessment, paying attention to the knowledge assessment of integrating theory with practice and the assessment of students' learning process. Through a series of teaching reforms and practices, “effective teaching” has been realized to a certain extent.

Key words: "Effective teaching", Teacher structure, Teaching means, Introduction teaching