The DNA kit is a biological teaching tool that provides a complete set of tools for extracting DNA from biological samples. In biology teaching, DNA extraction kits allow students to personally operate and extract DNA from plant, animal, or microbial samples. Through this process, students can intuitively understand the physical and chemical properties of DNA and learn the basic techniques of molecular biology experiments. In addition, the use of test kits can help students understand the storage and transmission of genetic information, enhancing their understanding of core biological concepts. The DNA kit is a very valuable tool in biological experimental teaching. It can not only stimulate students' interest in learning, but also cultivate their experimental skills and scientific exploration spirit.