Resource backup method and device of service function chain, equipment and storage medium

The invention discloses a resource backup method and device for a service function chain, equipment and a storage medium, and the method comprises the steps: querying an underlying resource corresponding to the service function chain in a network function virtualization environment, and carrying out the resource backup of the service function chain based on the link topology data of the underlying nodes, and calculating a reliability attribute value, a flow attribute value and a recovery capability attribute value of each bottom-layer node, determining a comprehensive importance degree value of each bottom-layer node according to attribute data by utilizing a weighted relative entropy algorithm, and backing up target bottom-layer nodes with the comprehensive importance degree values smaller than a preset value in the plurality of bottom-layer nodes. Therefore, on the basis of ensuring the reliability of the power business, the key underlying nodes are screened out, more reasonable underlying node resources ar