A side cowl top cover includes a cover body and a hook formed so as to expand at an upper portion of the cover body in order to be engaged with the end flange. The cover body includes: a vertical wall that extends upwardly from a lower side of the windshield; and an extended portion extended from an upper end of the vertical wall toward the front fender. The hook includes: a holder placed at a predetermined gap relative to an end face of the extended portion and extended substantially in parallel with the end face of the extended portion; and a vertical rib extended in a direction intersecting with the direction in which the holder extends, and interconnecting a bottom surface of the extended portion and a bottom surface of the holder.