Fabricated component connecting structure and construction method thereof

The invention discloses a fabricated component connecting structure and a construction method thereof. The fabricated component connecting structure comprises a first prefabricated piece, a second prefabricated piece, square steel pipes, a groove and automatic stud devices, the multiple square steel pipes are pre-buried in the connecting face of the first prefabricated piece, grooves correspondingto the square steel pipes in number and position are reserved in the connecting face of the second prefabricated piece, the automatic stud devices are pre-buried in the top faces and the bottom facesof the grooves, when the square steel pipes pre-buried in the first prefabricated piece are inserted into the grooves in the second prefabricated piece, the square steel pipes push stud covers of theautomatic stud devices to move in slideway grooves, finally the stud covers fall off, and the studs in the automatic stud devices are popped out and inserted into stud holes of the square steel pipesto achieve connection of th