The invention provides a full-automatic manufacturing assembly line for a plug-in adapting joint. The full-automatic manufacturing assembly line comprises an assembly line supporting frame, a plug-inhanging box, a circuit board lifting and stacking conveying frame, a conveying belt, a case, a plug-in adapter, a conveying frame and a plug-in adapter joint device. The assembly line supporting frameis fixedly connected to a back of the conveying frame in an electric welding mode. The plug-in hanging box is fixedly connected with the plug-in adapter. The case is arranged at a top end of the plug-in adapter. The circuit board lifting and stacking conveying frame is mechanically connected with the conveying frame. According to the invention, since the same plug-in has the same identity, the plug-in can be continuously supplemented through matching during use, in the process of extracting and using through the plug-in, the constraint on a bundling mechanism and an intermediate frequency tail indication mechanism can be gradually released to avoid condition of no-load feeding, therefore, the uninterrupted supply of plug-ins is carried out, the generation of defective products with incomplete circuit board plug-ins due to no load is reduced, and an operator does not need to keep a high-pressure tension state in a multi-guarantee state.