The reform of the new college entrance examination has put forward brand-new requirements for the teaching of current disciplines. The new college entrance examination not only requires students to be able to master knowledge,but also requires students to learn to learn in the process of learning, to master the method of learning, and to improve the core qualities of disciplines. This paper explores the 7E teaching model, taking the teaching of "active transport" in high school biology as an example, and practices teaching based on the 7E teaching model, through stimulation (creating a situation to stimulate students' desire for knowledge), participation (guiding students to participate in the learning of new knowledge), exploration (carrying out exploration activities to create new models), explanation (summarizing knowledge to deepen the concept), refinement (understanding examples, agreeing with the meaning), evaluation (sorting out and summarizing the return to the core concepts), and extension (connecting the theory with the reality to promote the extension of the concept), to help students stimulate the learning process. Concept extension, to help students stimulate the desire to learn, actively participate in the new knowledge, explore new activities, explain new concepts, speech simple hack, clear organization, learning, thinking and using coherent, knowledge, action, and belief in unity. This deepens students' understanding of knowledge and concepts, guides students to discover, explore, and solve problems in real situations, and students pay more attention to the process of knowledge formation, the knowledge structure of the series, and the generalization of the knowledge system. It fully improves the classroom effect and learning efficiency, promotes the overall development of students as a whole, and enhances the core literacy of students in the discipline of biology, to realize the purpose of the new college entrance examination reform.