A block operation method, an electronic device, and a storage medium are provided. A plurality of clusters are calculated according to computing power and rewards of each blockchain node, a node computing power and reward carried by each broadcast block being determined when a blockchain node receives a broadcast block. A target cluster to which a blockchain node belongs is determined, and a target difficulty weighting is determined, corresponding to the target cluster. A target difficulty of the target blockchain node is determined according to the node power and reward and the target difficulty weighting. A block is generated after the blockchain calculations are processed according to the target difficulty, the method improves decentralization of the blockchain.