The invention relates to a unshielded automatic detection system for a three-phase electric energy meter broadband carrier module, which comprises an MDS (Multimedia Dispatch System), an upper PC (Personal Computer), a detection tool, appearance and marker detection equipment and testing main equipment, wherein the MDS is connected with the upper PC by a data line; the upper PC is connected with the detection tool by a data line; a detection tool controller is mounted in the detection tool; four module wiring terminals are arranged in the detection tool; and the upper PC is connected with theappearance and marker detection equipment and the testing main equipment respectively. The system is compatible with detection of single-phase and three-phase modules, automatic logistics, automatic warehousing and the like, fills in gaps in state grid carrier module metering, automatic production warehousing, logistics and testing, can save the carrier replacement time between procedures, avoidstime waste caused by equipment line replacement, saves the detection equipment cost, increases a space utilization ratio, avoids module box inlet and outlet procedures, reduce human participation, andcan greatly improve the product detection efficiency.