The invention discloses a block chain-based information processing device, which comprises a block chain data management platform and a control terminal, and is characterized in that the block chain data management platform comprises an API layer, a block chain contract layer and a block chain data layer, and the API layer comprises a line data management interface and a resource data management interface; the Bass service layer comprises an account management service unit and an identity authentication service unit, the block chain contract layer comprises a user identification unit, the block chain consensus layer comprises a Pos unit and a pool verification pool unit, and the block chain network layer comprises an authority control unit, a privacy protection unit, an information verification unit and an information encryption and decryption unit. And the block chain data layer comprises a data block unit, an authority transfer unit and a user information storage unit. According to the invention, the block chain data management platform is arranged to cooperate with the control terminal to realize information processing, the information authority can be endowed or transferred according to requirements, and the flexibility and reliability of information processing are improved.