Abstract: The disclosure relates to a blockchain-based outsourcing processing method, including the steps of: transmitting, by a demander, product demand information to a network data server to form a demand order, and transmitting, by a supplier, self-processing capability information to the network data server; performing, by the network data server, matching according to the demand information and the processing capability information, and transmitting the demand order to the supplier; selecting, by the supplier, the demand order to quote; confirming, by the two parties, quotation, establishing transaction and generating a smart contract, and writing the smart contract into a blockchain for storage; and after completing goods delivery, automatically executing account transfer according to the smart contract to complete outsourcing processing transaction.