The invention provides a force transferring connection structure of a columnar component and a platy component. The platy component is provided with first countersunk groove tables, the columnar component is provided with second countersunk groove tables, first fixing holes and second fixing holes are formed in the first countersunk groove tables and the second countersunk groove tables respectively, the first countersunk groove tables and the second countersunk groove tables form blind holes with the circular cross sections, and the inner walls of the blind holes are matched with the outer walls of circular keys; the circular keys are arranged in the first countersunk groove tables and the second countersunk groove tables and connected with the first countersunk groove tables and the second countersunk groove tables through fixing parts. By adopting the structure, no protrusion is formed on the outer side end faces, the circular key structures are adopted, the outer walls of the circular keys and the inner walls of the first countersunk groove tables and the second countersunk groove tables are taken as torque transmission structures, the matching area is large, the positioning clearance is small, and the borne extrusion force and shear force are high. Due to the fact that the shearing resistance is high, the torque transmission reliability can be guaranteed without the large thickness. Tests show that the force transferring connection structure can reliably transmit the torque both in a vertical state and a lodging state.