Abstract:Microbiology is an important professional course for the aquaculture major. The experiment teaching of Microbiology is a key approach to convert theoretical knowledge into practical ability, which plays an essential role in the training of professional personnel. However, the operation of microbiological experiment is complicated and time-consuming. In the limited experimental teaching time, students cannot systematically participate in the complete experimental process, which results in the unsatisfactory teaching effect. We have explored the mode of undergraduate assistant in the teaching of Microbiology Experiment. The teaching assistants used their fragmented time to participate in experimental design, preparation of reagents and media, isolation and purification of microorganisms and mastered strong experimental skills. Then, they went back to the classroom to act as a bridge between teachers and students, assisting teachers to guide students’experiments. This mode enhanced the learning interest and comprehensive quality of the assistants, corrected the students’mistakes during the experiment in time, and improved the teaching effect.