In order to promote the application of block chain technology in the financial industry security standards，to prevent security risks. This report studies the application of Blockchain in the field of financial security，and interprets the financial industry standard JR/T 0184-2020 issued by the People’s Bank of China. This paper puts forward the difficulties in the application of block chain in the field of financial security detection，and finally gives the ideas and methods of the application of block chain in the field of financial security detection. After the release of the Blockchain security testing industry specifications in the financial field，it will promote the safe and rapid application of Blockchain technology in the financial field.