Abstract: A head structure for Venetian blind includes a head rail having a concave bottom surface, two mounting members assembled to the head rail and invisible from a front side of the head rail, and a slat tilting gear controlled via tilt cords instead of a rigid wand. The concave bottom surface of the head rail has a curvature close to that of slats of the Venetian blind, so that the slats in a fully lifted position can fitly bear against the bottom of the head rail to avoid deformation. The tilt cords, the invisibly assembled mounting members, and the lifted slats fitly bearing against the head rail not only creates beautiful integral appearance for the Venetian blind, but also enables reduced volume thereof for convenient packing and storage.