Federal learning modeling method and system

The invention discloses a federal learning modeling method and system. The method comprises the steps of obtaining configuration information of an application node, and determining a target network environment to which the application node requests to join based on the configuration information; determining a target node matched with the target network environment from the block chain; sending a federated learning modeling request to a target node, so that the target node determines a first candidate cooperative node of which the first node state meets the federated learning modeling request as a first target cooperative node; sending a federated learning modeling task to the first target cooperation node; and receiving federated learning modeling data fed back by the first target cooperation node, and completing a federated learning modeling task according to the federated learning modeling data. According to the application, different target nodes are set in different network environments, and then the targ