Multi-party computing method and device based on graph computing

One or more embodiments of the invention provide a multi-party computing method and device based on graph computing. The method is applied to service equipment corresponding to an initiator of multi-party computing. The method comprises the following steps: constructing a knowledge graph; wherein the knowledge graph comprises a master node corresponding to an initiator of the multi-party calculation, slave nodes corresponding to multiple data providers of the multi-party calculation, and edges used for connecting the slave nodes with the master node; each edge is used for representing a data cooperation relationship of multi-party calculation; carrying out graph calculation on the knowledge graph to solve a weight value corresponding to each edge; wherein the weight value corresponding to each edge is used for indicating the closeness degree of the data cooperation relationship represented by each edge; and determining at least one data provider meeting a preset condition from the plurality of data providers