A flush toilet comprising: a bowl portion including a bowl-shaped waste receiving surface and a rim portion formed on a top edge of the waste receiving surface; a discharge path for discharging waste, the discharge path has an inlet that is connected at a bottom of the bowl portion; a spout portion for generating a circulating current by spouting flush water to the bowl portion; a water conduit (14a, 114a) for supplying flush water to the water spout portion; and a water supply apparatus for supplying flush water to the water conduit (14a, 114a); wherein the rim portion comprises a rim inside wall portion forming an inner perimeter of the rim portion, and the rim inside wall portion comprises a rim inside wall upper sloped surface being positioned on a top region of the rim inside wall portion and being sloped downward toward the inner side surface, and an inner side surface extending straight in a vertical direction from a waste receiving surface top end up to the rim inside wall upper sloped surface; the water supply apparatus comprises a constant flow rate device for spouting a constant flow rate of flush water from the water spout portion, the rim portion comprises a rim top surface portion forming a top surface on the rim portion, and a rim outside wall portion forming an outer perimeter of the rim portion; the rim outside wall portion comprises a rim outside wall upper sloped surface in which an outside of the rim outside wall portion upper region is sloped downward; and the horizontal distance between the upper end of the rim inside wall upper sloped surface and the lower end of the rim inside wall upper sloped surface is longer than the horizontal distance between the upper end of the rim outside wall upper sloped surface and the lower end of the rim outside wall upper sloped surface. a bowl portion including a bowl-shaped waste receiving surface and a rim portion formed on a top edge of the waste receiving surface; a discharge path for discharging waste, the discharge path has an inlet that is connected at a bottom of the bowl portion; a spout portion for generating a circulating current by spouting flush water to the bowl portion; a water conduit (14a, 114a) for supplying flush water to the water spout portion; and a water supply apparatus for supplying flush water to the water conduit (14a, 114a); wherein the rim portion comprises a rim inside wall portion forming an inner perimeter of the rim portion, and the rim inside wall portion comprises a rim inside wall upper sloped surface being positioned on a top region of the rim inside wall portion and being sloped downward toward the inner side surface, and an inner side surface extending straight in a vertical direction from a waste receiving surface top end up to the rim inside wall upper sloped surface; the water supply apparatus comprises a constant flow rate device for spouting a constant flow rate of flush water from the water spout portion, the rim portion comprises a rim top surface portion forming a top surface on the rim portion, and a rim outside wall portion forming an outer perimeter of the rim portion; the rim outside wall portion comprises a rim outside wall upper sloped surface in which an outside of the rim outside wall portion upper region is sloped downward; and the horizontal distance between the upper end of the rim inside wall upper sloped surface and the lower end of the rim inside wall upper sloped surface is longer than the horizontal distance between the upper end of the rim outside wall upper sloped surface and the lower end of the rim outside wall upper sloped surface.