The invention discloses a metering terminal trusted access device and method for a power distribution and utilization scene. The metering terminal trusted access device comprises a metering terminal trusted access module, a terminal data trusted access module and a block transaction module, the metering terminal trusted access module comprises public and private key registration, equipment information chaining and verification equipment information; the terminal data trusted access module is used for encrypting a data private key, uploading the data private key to a block chain and carrying out consensus storage; the block transaction module comprises transaction initiation, block consensus and transaction storage; the block chain is adopted as a trusted access third party, distributed storage traceable transaction information is achieved, safety of equipment information and data is guaranteed, and the problem that in the prior art, safety is not trusted due to a centralization mechanism is solved.