A washer fluid heating device includes a container that contains a washer fluid, a lid portion attached to a first end of the container in a direction of a central axis line O to face an accommodation space for the washer fluid, heating means that has a proximal end portion attached to the lid portion and extends toward the accommodation space, and an outflow pipe having an outlet disposed in the accommodation space, the outlet is provided between a distal end surface of the heating means and a second end opposite to the first end of the container, and a region obtained by projecting the outlet onto a virtual plane perpendicular to the direction of the central axis line O of the container at least partially overlaps a region obtained by projecting the distal end surface of the heating means onto the virtual plane.