The utility model relates to a whole circle model board trolley assembly. The whole circle model board trolley assembly comprises a needle beam, a framework, an upper mould, a side mould, a lower mould, a needle beam supporting cylinder, an electric driving wheel and a laser diopter, wherein the framework is positioned on the needle beam through an upper fixing cylinder and a lower fixing cylinder, the upper mould is placed at the top of the framework, the side mould is installed on the framework through a plurality of side mould manual supports, the lower mould is connected to the framework through a lower mould hydraulic cylinder, the needle beam supporting cylinder is arranged at the bottom of the needle beam and supports the needle beam on the ground, the electric driving wheel is arranged on the framework and can slide on the needle beam, and the laser diopter is fixed on the needle beam. The whole circle model board trolley assembly has the advantages of being simple and firm in structure, convenient to assemble, rapidly in-place, accurate in lap joint, high in construction efficiency and the like.