The invention relates to a noise interference automatic detection system and method used for a concentrator broadband carrier module. The system comprises a detection station module, testing branches,a switch, an industrial personal computer and a power supply; four to-be-detected concentrator carrier modules are simultaneously born in the detection station module; the detection stationis respectively connected with four testing branches; the four testing branches are respectively connected with the switch; the switch is connected with the industrial personal computer through acable; the detection station module and four testing branches are respectively connected with a general power supply which is used for supplying power, each testing branch is provided with an independent switch power. The system disclosed by the invention is used as a modular testing unit body in the whole testing system design, four sets of specifically designed testing tool system are used as the main body tocooperate with the corresponding smart mechanical device; the system has high integration and flexibility, and the module testing efficiency is greatly improved.