An increasing number of enterprises attach importance to the artificial intelligence of Internet of things, but there also arise problems that many application details cannot be innovated. To solve the innovation education problem in engineering practice teaching, a platform for engineering innovation practice teaching system is designed. The approach to the platform design includes mainly the mode of situational teaching, teaching scheme and hardware design. First, in view of engineering education problems, we propose an innovative practical teaching framework consisting of situational practical teaching mode and other components; then, we introduce the practical case teaching scheme for smart home and smart door lock situations in detail, including practical course materials and cases; finally, we design and develop a practical teaching hardware platform based on Ali and Qingkeyun platforms, including hardware platforms for teachers' teaching and training, for laboratory development planning and for practical teaching data storage. This platform provides a new teaching scheme, a large number of real data and real project teaching cases for AI, and provides an overall development guideline and approach for AI teaching, thus could contribute greatly to college students’practical innovation ability. Keywords: engineering education; artificial intelligence; smart home; inno