Given that the integrated design method based on AHP is not suitable for the target users of animals, the paper aims to explore the B/AHP/FAST innovative design method based on animal behavior theory. Firstly, the animal behavior theory is integrated into the User Behavior Map to extract the design requirements. Then, the AHP/FAST integrated method is used to sort and transform the design requirements. Finally, the overall framework of the innovative design method is explained in detail by taking the dairy cow feeding robot as an example. A kind of product design method and thinking mode aiming at meeting the basic needs of animals are obtained. This new design method and mode provides a new way of thinking and research perspective for the design of similar products, making the design more systematic and scientific, and providing a reference for similar design cases.