The invention discloses a multi-channel carrier wireless interface device for various metering instruments. The device is characterized by comprising a plurality of carrier/wireless interface units which are mutually independent and simultaneously run through a parallel unit; and each carrier/wireless interface unit comprises a communication subunit used for communication of a carrier/wireless unit, a signal control subunit used for controlling STA, EVE and SET signals on the carrier/wireless unit module, and a switching subunit used for switching the detection signals. Thus, test wiring is reduced, the test environment is simplified, meter data is made intelligent, and the test efficiency is improved.