Provided with a blockchain-based shared asset trading system for tokenizing and trading a shared asset comprising a plurality of sharer terminals, provided on a sharer side, for transmitting an original warranty containing the appraisal result of the shared asset and transmitting a warranty in which the sharer's signature has been entered to the original warranty; a blockchain network for receiving and storing the original warranty in a smart contract block, issuing a token based on the smart contract block and generating an electronic wallet in which the token is stored; and an electronic wallet management server for receiving the warranty in which the signature has been entered from the plurality of sharer terminals and transmitting a transaction including the warranty in which the signature has been entered to the original warranty.