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The invention discloses an invoice management method and system based on a block chain. The method comprises the steps that each logistics transportation information node acquires logistics transaction information; a sequencing node is used for sequencing the logistics transaction information, generating a logistics transaction information set, then creating a block and broadcasting the block to each logistics transportation information node and the invoice management node; each logistics transportation information node and each invoice management node verify the transaction information in theblock, and write the block into the block chain after the verification is passed; the invoice management node acquires logistics transaction information of a target order of which the service is ended, verifies the logistics transaction information, confirms reconciliation information of the target order, broadcasts the reconciliation information of the target order in the whole network, and writes the reconciliation information into a block chain of the invoice management node; during invoicing, the invoice management node acquires reconciliation information and verifies the reconciliation information, and issues an invoice after the verification is passed, and writes the invoice into a self block chain after the invoice is broadcasted in the whole network. The block chain technology isadopted, the whole waybill business process can be tracked, and evidences are provided for invoicing.