The work aims to use visualized literature analysis methods to summarize the development context and research status of AI digital human, combine the analysis of digital human's application in digital space at this stage, and try to infer future research and development directions. With the use of CiteSpace software, based on CNKI and Web of Science's core database, the research hotspots and trends of AI digital human were explored through the method of publishing the trend, core authors analysis, clustering analysis, and publishing agency analysis. AI digital human had the image of virtual role and performed interactivity through "concrete". Whether in the construction of digital space or in the intelligent development of digital interaction intelligence, it had a positive market prospect. In conclusion,the research on AI digital human is on the rise at home and abroad, and the cooperation between the author and scientific research institutions continues to develop closely. The research focuses mainly include life politics, artificial intelligence, human-computer interaction, media convergence, digital village construction, deep learning, etc., and the development trend analysis will try to provide more ideas for future research on the diversity construction of AI digital human.