The invention belongs to the field of chemical equipment, and particularly relates to a rectifying tower for light component removal. The rectifying tower comprises a tower body, a tower cover, a working unit and a heater, wherein the tower body is of a hollow cylinder structure, the heater is installed at the bottom of the tower body, the working unit is installed in the tower body, and the towercover is fixedly connected with the top of the tower body in a bolt connection mode; and the working unit comprises a fixing plate, a first pipe, sponge, a spring, a shaft rod and a top plate. When the rectifying tower works, the sponge can absorb mixed liquid and foam in mixed gas; the shaft rod rotates to drive the mixed gas, so mixed liquid and foam in the mixed gas are removed; and the spongeand the rotating shaft rod can delay flowing of the mixed gas, so the mixed gas is rectified more sufficiently, the contained foam is removed more thoroughly, and finally, a rectification product with better quality is obtained.