Abstract: Intelligent dialogue system is the core technology in the field of artificial intelligence, and it will act as a new harmonious human-computer interaction. The research has great theory significance and application value. The status and advances of dialogue system and the application of deep learning model in dialogue generation were comprehensively summarized in this paper.First, the type of intelligent dialogue system was elaborated. The module framework of the system was introduced, including the research contents of the modules and key components of the main technology ideas and their research status. Then, the various solutions to dialogue generation were systematically analyzed from the perspective of theoretical models, advances and usability. The neural network structures and the construction principle of sequence-to-sequence applied to natural language generation were analyzed emphatically. Finally, the problems and prospects for future research directions were summarized.