Exploring the oceans in depth is an inevitable choice for the future development of all countries, and strengthening education on ocean awareness is a solid foundation for moving towards the oceans. Relying on its unique simulated ecological environment and interdisciplinary cultural characteristics, the oceanarium has increasingly become an important part of children’s marine education. However, oceanarium services for children are weak, making it difficult to realize the educational significance of oceanariums. Based on Piaget’s theory of children’s cognitive development, this paper explores the relevant experience pain points and potential optimization opportunities through literature analysis, field research and other research methods to optimize the process of children’s visit to the oceanarium, so as to design an intelligent guide system of the oceanarium for children. The system adopts augmented reality and image recognition technology, provides adaptive interactive service guidance according to children’s cognitive characteristics, and provides children with interactive experiences that meet their expectations through diversified contextual design, so as to transform the static-oriented visiting mode into a dynamic visiting mode with multi-sensory interaction and participation, and to realize the unity of the knowledge experience and the fun experience. A good children’s guide system can not only balance the harmonious relationship between the environment, people and nature, but also maximize the satisfaction of children’s emotional needs.