A water draining structure for an electric wire cover (11) comprising: a wall section (53) covering the circumference of routed electric wire; a pair of slit openings (63) piercing the wall section (53); and water-guiding protruding sections (61) that protrude from the opening end (55) of each adjacent pair of slit openings (63), have a curved-surface apex section (57), and are arranged protruding from the inside surface (59) of the wall section (53).