Abstract: An eye shading device includes a mounting block, a pivot frame and a lens member. The mounting block has opposite sides which are formed respectively with a pivot hole, vertical and horizontal retaining grooves that extend from an insert end of the pivot hole, and a protuberance that is defined by the vertical and horizontal retaining grooves. The mounting block further has a top side provided with a planar fastening member. The pivot frame is generally U-shaped and includes a pair of resilient arm portions and an intermediate retaining portion that interconnects the arm portions. The arm portions have bent distal sections that extend pivotally and respectively into the pivot holes in the opposite sides of the mounting block.