With the progress of artificial intelligence and big model technology in recent years,artificial intelligence-generated content(AIGC)technology has been developed rapidly and applied in various fields.AIGC technology has become an important new quality productive force for digital content production.In this paper,the concept of AIGC technology,its development stage,current technologies and applications in various fields,and the industrial chain of AIGC(including the base layer,intermediate layer,and application layer)were analyzed.The advantages and challenges of AIGC were discussed,such as improving the quality of content,maintaining creativity,solving ethical and privacy issues,and overcoming technological limitations.Finally,the future research and application directions of AIGC were envisioned.