The application of blockchain technology has been extended to many fields of social life,showing a wide range of application prospects.While the blockchain technology brings various conveniences to social life,some criminals use it to commit illegal and criminal acts such as money laundering,fund-raising,pyramid schemes and fraud,infringing the legitimate rights and interests of the public and seriously endangering social security.In order to effectively combat blockchain-derived crimes,this article introduces the characteristics and application of blockchain,analyzes the classification and characteristics of blockchain-derived crimes,summarizes the difficulties in the detection of such cases.Countermeasures including improving laws and regulations,strengthening industry supervision,enhancing risk prevention,promoting interagency cooperation,building investigation capability,and strengthening guidance and publicity are proposes.