The utility model discloses a collector for a packed tower and a collector group for the packed tower. The collector comprises an inverted shading ring piece group in a layered structure, wherein the inverted shading ring pieces on each layer are in a hollow inverted cone frustum shape; the outer edges of the inverted shading ring pieces are reduced from top to bottom layer by layer; projections of the inverted shading ring pieces from top to bottom are partially overlapped on adjacent layers; the inverted shading ring pieces on adjacent two layers are fixedly connected through a connecting plate; annular shading caps are arranged above the annular top of the inverted shading ring pieces on the uppermost layer at intervals; the annular shading caps are welded with the tower wall; a liquid collection barrel is communicated with hollow holes in the inverted shading ring pieces mounted on the lowest layer; and a cone angle of the inverted shading ring pieces on each layer is 120-180 degrees. The device is easy to manufacture, convenient to mount, complete in liquid collection and full in mixing and realizes 360-degree full coverage.