Abstract: The reform of experiment assessment mode is one of the important contents of the experiment teaching reform, establishing a scientific and reasonable assessment mode, which can arouse students’ enthusiasm and improve the quality of experiment teaching. The current situation of assessment mode on Water Supplying in Fire experiment are analyzed concretely, the shortcomings of the mode are pointed out, multiple unit assessment mode of experiment teaching is put forward, the goal of stimulating students’ enthusiasm and initiative in experiments are achieved, students’ abilities of comprehensive experiment purpose are enhanced. Thus, the quality of the experiment teaching and students’ comprehensive quality can be improved.