This paper aims to explore the application of blockchain technology in the field of novel crimes, and focuses on the role of data analysis in forensic expertise. First, it introduces the basic principles and characteristics of blockchain technology, as well as the rise of new crimes in the blockchain environment. Then, the importance of data analysis in revealing new crime patterns, tracking criminal behavior and providing evidence support is discussed. Then, it introduces the commonly used blockchain data analysis methods and tools, and illustrates its application in the new crime field with examples. Finally, the development trend and challenges of blockchain data analysis in the future are prospected, and the direction of further research is proposed.