The invention relates to a low-weight force transfer support plate structure capable of being applied to a ground gas turbine and aero-engine. A force transfer support plate is obtained by sheet metal forming of a board with the thickness being 0.3-2mm. Reinforced boss rib structures of the certain width and depth are designed at different height positions around the support plate, and the boss rib structures are formed through impact molding. The support plate is combined with the inner circle and outer circle of a casing in a welding mode ultimately and further bears complex stresses of a welding assembly in the operating state. Through the support plate subjected to sheet metal forming, the weight of the support plate casing in the ground gas turbine and aero-engine can be lowered obviously. Furthermore, when analysis is made from the aspects of engine force transferring and stressing, through the structure design method of the reinforced boss rib structures dispersed at the different height positions on the surface of the support plate, the support plate thermal expansion requirement caused by different deformation rates of the inner circle and outer circle of the casing in a heat-state environment can be met, and meanwhile the support plate structure can be adapted to thin-walled support plate vibration danger possibly caused by gas flow pulsation of gas flowing in a main flow channel at a high speed.