Block chain-based audit data evidence traceability method and terminal

The invention is suitable for the technical field of auditing, and provides an audit data evidence storage traceability method and terminal based on a block chain, wherein the method comprises the following steps: receiving original information uploaded by the terminal, storing the original information in a block chain original node database, wherein the original information comprises original data, uploading terminal user information and a certification material; when the original data needs to be processed, sending a data processing request to the block chain original node database through the terminal, and calling the corresponding original data according to the data processing request and sending the data to the terminal; then, receiving the processing information sent by the terminal and storing the processing information in the block chain processing node database, wherein the processing information comprises processing result data, processing terminal user information, processing process information an