Data interaction method and device based on block chain network

The invention discloses a data interaction method and device based on a block chain network. The method comprises the steps that a data submission node sends to-be-linked data to a participation node;the participation node generates an uplink request carrying the to-be-uploaded data, and sends the uplink request to the management node; the management node verifies the signature of the to-be-uploaded data carried by the uploading request, generates a block according to the uploading request if the signature passes the verification, and adds the block to a service full chain; when the management node receives inquiry information which is sent by the request terminal and aims at the service processing authority corresponding to the service process data, a block is obtained from the service full chain, and the service process data is obtained through the block; and the management node audits the service process data, and generates feedback information for the service processing permissioncorresponding to the serv