The invention discloses a high-performance prefabricated steel-concrete composite girder bridge deck slab assembling joint member and relates to the field of highway bridges. The high-performance prefabricated steel-concrete composite girder bridge deck slab assembling joint member comprises bridge deck slabs and a steel pipe, wherein each bridge deck slab consists of connecting steel plates and asteel reinforcement structural net; and the first steel plates and the second steel plates are connected and fixed together through the steel reinforcement structural nets. According to the high-performance prefabricated steel-concrete composite girder bridge deck slab assembling joint member, by clamping rectangular toothed plates arranged on the first steel plates and the second steel plates inthe two groups of bridge deck slabs in a staggered and matched manner, the two groups of bridge deck slabs are effectively and rapidly aligned, and deviation between the two groups of bridge deck slabs is prevented. According to the high-performance prefabricated steel-concrete composite girder bridge deck slab assembling joint member, as steel reinforcement welding ends are arranged in the two groups of connected bridge deck slabs in a staggered manner, the steel pipes penetrate through through-holes formed by the staggered steel reinforcement welding ends arranged in the two groups of connected bridge deck slabs, and the steel reinforcement welding ends are welded and fixed to the external walls of the steel pipes, the tensile effect between the two groups of bridge deck slabs is effectively improved, and the structural stability is improved.