The application provides a
skew grid cylinder structure non-coplanar X
type conversion node and a design method thereof, and solves problems of complex node manufacturing process, low construction efficiency, difficult connection, poor stress, difficult manufacturing and the like. The upper and lower ends of the center circular tube are fixed with cover plates, two inclined columns at the upper part of the X
type conversion node are fixed on the cover plate at the upper end of the center circular tube, and two inclined columns at the lower part are fixed on the cover plate at the lower end of the center circular tube; the middle part of the vertical through type connecting plate vertically penetrates the center circular tube; the upper part and the lower part of the vertical through type connecting plate vertically penetrate the cover plates at the upper and lower ends respectively and are located between the two inclined columns of the X
type conversion node; the inclined columns at the upper and lower parts are respectively inserted and fixed with inclined column inner
insertion plates, and the inclined column inner
insertion plates are respectively fixed with the cover plates and the vertical through type connecting plate; the inner stiffening plates are respectively fixed with the center circular tube, the cover plates at the upper and lower ends and the vertical through type connecting plate; and the outer stiffening plates are respectively fixed with the cover plates at the upper and lower ends and the center circular tube.