The utility model discloses a shear device for a longitudinal connection type track slab, belonging to the technical field of shear devices embedded at the top of the longitudinal connection type track slabs. The shear device comprises a connecting plate. One side of the connecting plate is fixedly connected with embedded bars and the other side of the connecting plate is fixedly connected with a shear plate. Teeth are arranged on at least one surface of the shear plate. The direction of the tooth grooves of the teeth is perpendicular to the connecting plate. At least one connecting hole is arranged on the shear plate. The utility model has the advantages that the shear stress of the longitudinal connection type track slab on the subgrade is ensured to be effectively transferred and dispersed to the adjacent track slabs, the impact of alternating stress formed by train wheel pairs on the end of the track slab is effectively reduced, and the situation that the end of the track slab is sheared off because the subgrade is settled is avoided. The shear device is particularly suitable for longitudinal connection type track slabs of high-speed railways.