Traditional oral materials are mostly stable materials which are not affected by oral environment，while intelligent materials can adapt to various changes in the oral cavity and respond favorably，so they have become one of the research hotspots in recent years. As an environmentally sensitive polymer，intelligent hydrogel is an important type of smart materials and has been widely studied in stomatology. Based on the literature at home and abroad，this paper briefly reviews the definition and classification of intelligent hydrogels and the application of intelligent hydrogels in stomatology，and prospect the future development of these materials.