To solve the problem caused by the ignorance of organization-compositional diversity in blockchain-based kiw fruit traceability system, a consortium blockchain inter-organizational contract transaction mechanism for kiwi fruit quality traceability was proposed. Through two link confirmations on the blockchain, the process of signing and confirming the terms of the contract in the actual transaction was transferred to the consortium blockchain, so as to realize the cross-organization incontestable transaction. The consortium blockchain was chosen to construct the blockchain network for kiwi fruit industry chain traceability system, the smart contract technology was used to make the information of the kiwi fruit production process valuable, and the Hash value was used to light the on-blockchain stress. The transaction contract number was used to realize the association of the trace data, responsible person and responsible enterprise. Result of test analysis showed that each piece of data on the blockchain was about 102ms. The time of one complete traceability was extended by about 7.11ms. When on-blockchain contract transaction was increased. The research ensured the data continuity and traceability of multi-organization tracing, which was of great significance to improve the quality and safety of agricultural products.