The invention provides a low-voltage concentrated meter reading communication detection device comprising an analog circuit and a digital circuit. The analog circuit comprises power frequency isolation signal coupling, band-pass filtering, carrier signal power detection, a program-controlled local oscillator, AD sampling, a concentrator module, an analog meter module and a power control module. The digital circuit comprises system data memory, an embedded computer software and hardware system, buttons, a display module and a non-carrier communication port. The low-voltage concentrated meter reading communication detection device is an onsite portable tool which is light and convenient and easy to use so that measurement of communication functions, communication capacity and onsite power line electromagnetic environments can be effectively performed on various acquisition devices like a special transformer acquisition terminal, a concentrator, a collector and an electric energy meter, and a local communication problem of an acquisition terminal system can be solved onsite.