Manufacturing industry cross-domain privacy entity security alignment sharing method based on block chain

The invention discloses a manufacturing industry cross-domain privacy entity security alignment sharing method based on a block chain. The method comprises the following steps: presetting a data management and control agent in each enterprise system in the whole stage of an intelligent manufacturing industry supply chain; constructing a block chain network of a current intelligent manufacturing industry supply chain, and adding each enterprise into an alliance chain; connecting each data management and control agent with the privacy entity to align the task execution center; enabling an enterprise data management and control agent in an intelligent manufacturing industry supply chain to initiate a private entity alignment request to data management and control agents of other enterprises, and enabling the data management and control agent to construct a private account book after an opposite party confirms that the private entity alignment request passes; and finishing the uplink storage and storing the data