Abstract:In order to sort out the research topics and evolution of intellectual property information services in China, taking the Chinese papers related to intellectual property information services from 2006 to 2020 included in CNKI database as the research object, the Latent Dirichlet Allocation (LDA) model is used to conduct the topic evolution analysis based on the document-topic probability distribution and subject-item probability distribution results.The results show that the service content, service scope and service mode of intellectual property information service from 2006 to 2020 have been inherited and evolved into to a certain degree,while the intellectual property information service related to archives management has not received continuous attention and research.