Abstract: The present disclosure discloses a whole-process traceability system for aquatic products based on blockchain technology, wherein: The data acquisition layer is composed of environmental monitoring unit, feeding monitoring unit and RFID identification unit, which is used to collect aquaculture environmental data; the edge computing layer includes an edge server and an industrial control computer. The edge server and the industrial control computer preprocess the collected data; the blockchain layer is built on the Hyperledger Fabric platform to realize data tamper-proof storage, and the data authenticity is automatically verified through smart contracts. The application layer includes the aquaculture management subsystem, processing management subsystem, logistics management subsystem, and sales management subsystem, and adopts a multi-level authorization mechanism to manage data access rights.