Abstract: A blockchain-based data processing method and apparatus. An implementation solution is: in response to receiving a contract deployment request sent from a requesting node in a blockchain network, acquiring a contract file corresponding to the contract deployment request, wherein the contract file is generated by performing content extension on a smart contract corresponding to the contract deployment request; performing validation on the contract file based on an analysis result of the contract file and a blockchain account book, wherein the validation is used to characterize performing validation on a secret key of the contract file, a content of the contract file, and a signature of a contract participant, wherein the blockchain account book is generated by pre-executing a contract deployment transaction; and in response to the contract file passing the validation, determining a smart contract corresponding to the contract deployment request according to the contract file.