The invention relates to a noise interference automatic detection method and a noise interference automatic detection system applied to a single-phase electric energy meter narrow-band carrier module.The system comprises a detection station module, a test branch, a switch, an industrial personal computer and a power supply, wherein six single-phase electric energy meter carrier modules to be detected are simultaneously carried in the detection station module, the detection station is separately connected with six test branches, the six test branches are separately connected with the switch, and the switch is connected with the industrial personal computer via a network cable; the detection station module and the six test branches are separately connected with a main power for powering, and each test branch is provided with an independent switching power supply. The system provided by the invention is used as a modularized test unit body in a whole test system, and the six specially designed test tooling systems are used as a main body and matched with corresponding intelligent mechanical devices, so that the system has extremely high integration level and flexibility, and meanwhile test efficiency of the module is greatly improved.