Abstract: Undergraduate laboratory course is important for understanding the theoretical knowledge. In order to improve undergraduates' rational understanding of experimental theory and skills, and enhance their awareness and interest in autonomous learning, this paper puts forward the methods of "theory query" and "step adjustment" to encourage students to give a full play to their creative thinking and improve their lab skill. This method has been practiced in the organic chemistry laboratory under the guidance of the authors. As a result, the enthusiasm of students in the experimental process has been significantly improved; more scientific problems and new ideas have been put forward for the rationality and continuous improvement of the experimental method, and the truth that "it is better to believe than not to have books" has been understood.

Key words: Organic chemistry, Experiment, Creativity, Undergraduate teaching