The invention discloses a warehouse construction method and system based on a PBFT block chain technology, and the method comprises the steps that an intelligent contract is formulated in a block chain network, and a node is elected; other nodes vote the candidate nodes; a user signs a part needing consensus, sends the signed part to a network, broadcasts a consensus request, judges after receiving the consensus request by a certain node, rebroadcasts a transaction if the consensus request is met, and puts the transaction into a consensus cache sequence; after the system initializes consensus,the nodes enter a consensus process, a main node of the PBFT encapsulates and signs consensus information, the main node broadcasts the information in the whole network, and an auxiliary node judgesthe information; if the information is valid, a 'preparation' stage is entered, the information is packaged and signed, and the information is broadcasted to the whole network; and after the main nodedoes not respond within the specified time or has reached the consensus, view switching is performed to enter the next round of consensus to generate a new block. In the embodiment of the invention,the problems of opaque information, low safety performance and low throughput in the supply chain are effectively solved.