One or more embodiments of the present specification provide a data structure reading and updating method and device, and electronic equipment. The data structure reading method may comprise: a blockchain node in a block chain network obtains a call request for a smart contract; in response to the calling request, the block chain node operates a contract code contained in the smart contract so asto analyze a data structure described by metadata contained in the smart contract and characterize the data structure through a computer programming language; and the block chain node returns the data structure represented by the computer programming language to the initiator of the call request.