The invention relates to the technical field of identity card management, in particular to a network legal identity management system based on an electronic legal identity card network mapping certificate. The network legal identity management system based on the electronic legal identity card network mapping certificate provided by the invention comprises a network mapping certificate issuing mechanism, a network mapping certificate verification mechanism, a network service system and a network mapping certificate holder interactively performing information transmission and verification. Through adoption of the system, the technical problem that an electronic legal identity card without a personal digital certificate cannot be directly applied to network legal identity management is solved. Compared with various existing network identity authentication ways derived on the basis of population information bases, the system has the advantages that the aim that real names correspond to real persons in legal identity authentication is fulfilled, and the problem of subjective and non-subjective faults caused by artificial factors is solved effectively.