The invention discloses a high and large template support system visual model under the background of a Jiangxi Fengcheng power station '11.24' extra serious collapse safety accident. The model is in a cuboid shape integrally, and comprises a horizontal rod, a vertical rod and a shear shank, the horizontal rod and the vertical rod are welded to form a model frame, and the shear shank is welded to the surface of the model frame. The horizontal rod, the vertical rod and the shear shank are high-strength steel. The high-strength steel is composed of carbon, manganese, silicon, chromium, nickel, titanium, aluminum, sulfur, copper, iron, molybdenum, potassium, tin, cesium, iodine, lead, gold, tungsten and molybdenum, 1:10 scale layout can be conducted on the model according to a site operation specific environment size, a high and large template support system can be clearly shown, in the presence of the model, a technological manager can perform specific and visual technical disclosure on workers according to the visual model, thus information obtained by the workers is simple and accurate, and accordingly it is ensured that the technical disclosure keeps pace with an expert demonstration scheme understood by the workers and collapse accidents are prevented from occurring during construction.