The invention relates to an automatic connection system used for detecting a broadband power carrier-wave module of a concentrator. The automatic connection system comprises a loading assembly line, an unstacker, an electromagnetic shielding box, a conveyor line, a stacker, an un-full box buffer conveyor line, a six-axis mechanical hand and an unqualified objet conveyor line, wherein a turnover box equipped with a to-be-detected broadband power carrier-wave module of the three-phase kilowatt-hour meter is sequentially transferred to pass through the loading assembly line, the unstacker, the electromagnetic shielding box, the conveyor line and the stacker. The automatic connection system is characterized in that a detecting module is mounted in the electromagnetic shielding box, wherein thedetecting module is used for performing multi-performance detection on the broadband power carrier-wave module of the concentrator, and has a detecting frequency band of 2 MHz-20 MHz. The automatic connection system can realize ex-warehousing and automatic dismounting of a stacking module of the broadband power carrier-wave module of the three-phase kilowatt-hour meter, automatically stacks qualified products and is connected with a warehousing system, reduces manpower resource investment in a module unstacking process, reduces labor intensity, is suitable for batch module detection, and provides guarantee for improving efficiency of the whole module detecting system.