In the primary education stage, science is a very important subject, in the classroom teaching, primary school science teaching AIDS play a very important role. By comparing and analyzing the teaching AIDS of "Conductors and insulators" in the textbook of "Science" for primary schools, this paper finds that there are some defects in the experiment of the textbook, such as the experiment phenomenon is not intuitive and obvious, and the experimental materials are not easy to store. Therefore, by improving the materials required for the experiment, adding storage boxes, liquids, human body detector and other improved teaching AIDS were made. This innovative teaching AIDS can simultaneously measure whether solid, liquid and human body conduct electricity, and the use of this teaching AIDS can improve the efficiency of the experiment and lay a foundation for students to cultivate innovative spirit and form scientific literacy.