The utility model provides a rotary cloumn, is including the base that is located the bottom to and be fixed in the lower casing on the base, and connect the last casing on the casing under in, said upper and lower casing and base extend about all and go up casing and casing cavity down, go up the casing and can rotate around the axial of wherein extending down in the heart for casing down, and the top of going up the casing is connected with horizontal extension's rotation axis, is equipped with first input shaft and second input shaft on the lower casing respectively, states first input shaft and second input shaft and connects external actuating mechanism respectively, goes up casing and an internal transmission and the 2nd transmission of being equipped with of inferior valve, an input shaft transmission and then drive upward the casing for the rotation of lower casing, the 2nd input shaft the 2nd transmission and then drive the rotation axis rotates around the axle that it transversely set up self. This rotary cloumn can make the solar device who utilizes it have better solar energy conversion and utilization efficiency to compact structure, reasonable in design, easily control.