Abstract: Abstract: In order to analyze the development trend of blockchain technology, this paper designs the retrieval requirements from three aspects: the overall literature output of blockchain, the application of blockchain and blockchain finance. Taking the literature retrieved from CNKI as a sample, the method of literature econometric analysis is introduced, and CiteSpace software is used to draw the co-occurrence map of key words, the map of author cooperation and institutional cooperation, so as to visually analyze the data. In the analysis, the key words applied in the blockchain are classified according to the meaning, and the relationship between the change speed of the hot key words and the research trend is creatively proposed through the tracking statistics of the blockchain hot key words. The results show that the relevant papers of blockchain have been growing explosively since 2015. The application and research of blockchain in finance, the characteristics of blockchain technology, the combination of blockchain and emerging technology are the hot issues of current research. There is less cooperation between authors and institutions in blockchain research, and scientific research cooperation groups need to be formed. In the future, the research focus of blockchain tends to be the combination of practical application and emerging technology.

Key words: blockchain, bibliometrics, blockchain application, blockchain finance, knowledge graph