A cover structure of a touch panel includes a cover plate, a patterned shielding layer, and a decoration layer. The cover plate has a visible region and a peripheral region including a mark region. The patterned shielding layer is disposed on the cover plate, and the patterned shielding layer is disposed in the peripheral region. The patterned shielding layer includes at least one hollow structure disposed in the mark region. A circumscribed region surrounding the hollow structure is defined in the mark region. A frame edge of the circumscribed region overlaps a most prominent circumscribed edge of the hollow structure. The decoration layer is disposed in the peripheral region and covers the hollow structure. An area of the decoration layer is larger than an area of the circumscribed region. A shape of the decoration layer corresponds to a shape of the frame edge of the circumscribed region.