The coordinated development of Beijing-Tianjin-Hebei is a hot topic in various fields. In order to deeply understand the research trend on the topic of coordinated development of Beijing-Tianjin-Hebei, a probabilistic topic model was adopted to analyze the 14, 235 journal papers in CNKI collected from 2009 to 2019. The optimal number of topics was determined by taking the degree of perplexity and the average similarity of topics. Based on the time of publications, this paper explores the potential topics of journal papers, and analyzes the trend of topics evolution from the perspectives of topic intensity and topic similarity. Through data analysis, 10 potential topics are developed, annual variation trend of topic intensity is generated, evolution path of topic content is constructed, and topic evolution rules are analyzed. This paper tries to provide theoretical basis for understanding the coordinated development of Beijing-Tianjin-Hebei and making scientific decisions.