Electrophoresis apparatus is an important experimental equipment used in biology teaching for separating biomolecules such as DNA, RNA, or proteins. It realizes the separation of each component in the sample by applying an electric field in the gel and taking advantage of the different charged properties and sizes of molecules. In biology teaching, electrophoresis equipment can help students visually observe and analyze the migration patterns of biological molecules, and learn the influence of molecular size, shape, and charge on their migration rate. Through the practical operation of electrophoresis experiments, students can master the basic skills of molecular biology experiments, such as gel preparation, sample loading, electrophoresis operation and result analysis.