The invention discloses a fabricated building wallboard and floor pull-connecting and tenon-riveting integrated joint and a construction method thereof. According to the fabricated building wallboard and floor pull-connecting and tenon-riveting integrated joint, a PK box is embedded in the bottom end of an upper prefabricated wallboard, a shearing force groove is reserved in the bottom of the PK box, a lead screw is embedded in the top end of a lower prefabricated wallboard, and a shearing force groove is reserved in the top end of the lower prefabricated wallboard; during installation and connection, the lead screw at the top end of the lower prefabricated wallboard penetrates through a through hole in a prefabricated wallboard, stretches into the PK box embedded in the bottom end of the prefabricated wallboard, and is fixed through a cushion bock and a nut, mortar is injected into a connection space of the shearing force groove in the bottom end of the upper prefabricated wallboard, the through hole of the prefabricated floor and the shearing force groove in the top end of the lower prefabricated wallboard, and an integrated shear connector is formed after tamping and solidifying. According to the fabricated building wallboard and floor pull-connecting and tenon-riveting integrated joint and the construction method thereof, the structural strength of the joint is high, the shear resistance is high, the joint can effectively resist to the natural disasters such as earthquakes, typhoons and debris flows, and the quality and the technical performance of a fabricated building are greatly improved.