Prefabricated floor slab joint structure

The utility model discloses a prefabricated floor slab joint structure, relates to the technical field of prefabricated floor slabs, and aims to solve the problem of low connection strength between adjacent floor slabs due to lack of a limiting structure between the adjacent floor slabs. The prefabricated floor slab joint structure comprises the adjacent floor slabs, a gap and a groove, a supporting plate is fixedly mounted in the groove, and a plurality of two-way screw rods are rotatably mounted at the bottom of the supporting plate; the multiple two-way screws are arranged in the length direction of the gap at equal intervals, two symmetrical connecting blocks are connected to the surfaces of the two-way screws in a threaded mode, connecting rods are hinged to the two sides of each connecting block, and clamping blocks are jointly hinged to the ends, away from the connecting blocks, of the two connecting rods on the same side; and clamping grooves matched with the clamping blocks are formed in the ends, cl