The invention belongs to the technical field of information security, and discloses a distributed power transaction credible identity management method and system, and computer equipment. The distributed power transaction credible identity management system comprises an identity registration module, a system role registration module, a voucher issuing module, a storage certificate creation module, a storage certificate verification module, a role updating module and a voucher updating module. Based on the blockchain, distributed identity identification, verifiable declaration, zero-knowledge proof and other technologies, autonomous control of entity (human, machine and object) identities in a distributed scene is achieved, identity security authentication, authorization and data exchange in a privacy protection state are achieved, and a brand-new, safe and efficient distributed authentication system is provided. Meanwhile, the system provides the capabilities of autonomous identity management, agile access, privacy authentication and the like of the distributed heterogeneous entity, the authentication mode is convenient, and the authentication cost is low.