The invention discloses a connection structure between prefabricated members. The connection structure comprises an upper prefabricated member and a lower prefabricated member, an upper core connection table and an upper reinforcing bar ring are arranged at the connection end of the upper prefabricated member, and the upper core connection table is arranged in the center of the connection end of the upper core connection table; a lower core connection table and a lower reinforcing bar ring are arranged at the connection end of the lower prefabricated member, and the lower core connection table is arranged in the center of the connection end of the lower prefabricated member; and the upper core connection table and the lower core connection table are fixedly connected through high performance mortar, and horizontal projections of an upper reinforcing bar and a lower reinforcing bar are overlapped with each other, and the upper reinforcing bar and the lower reinforcing bar are fixedly connected through ultrahigh performance concrete pouring. According to the connection structure between the prefabricated members, during assembly construction, other temporary consolidation and support measures are not needed, construction is fast and convenient, the construction difficulty is lowered, the construction efficiency is improved, construction cost is reduced, and meanwhile, the upper and lower prefabricated members can be firmly connected together in an anchored mode.