The invention relates to a blindly-inserted shielding type printed circuit board cable assembly. The blindly-inserted shielding type printed circuit board cable assembly comprises a plug assembly, a connecting mechanism, a shielding type printed circuit board assembly and a cable fastening assembly. The plug assembly is arranged at one end of the connecting mechanism, the shielding type printed circuit board is arranged in the connecting mechanism, and the cable fastening assembly is arranged at the other end of the connecting mechanism. The blindly-inserted shielding type printed circuit board cable assembly has the advantages that by means of a connecting nut and a convex rib structure at the inserting end of a plug shell, as the convex rib structure has enough length, during insertion with a connector, it can be guaranteed that after the convex rib structure of the plug shell is positioned and guided, the connecting nut is subjected to screwed connection, meanwhile, a three-head thread structure is arranged on the connecting nut of the plug and used for rapid connection of the cable assembly, and the electric connector can be blindly inserted through an auxiliary tool. The electric connector is suitable for occasions in which mounting and operating space is small, holes are deep, and blind inserting and mistaken inserting preventing are needed, and the blindly-inserted shielding type printed circuit board cable assembly is high in operability and wide in application range.