A toilet apparatus comprising: a main part including a function part, and a case cover covering the function part; a toilet seat attached rotatably to the case cover; and a toilet lid attached rotatably to the case cover, the toilet lid shifting between a closed state covering the toilet seat and an open state exposing the toilet seat, the toilet lid including a lid main body covering upward the toilet seat in the closed state, and a hanging portion hanging from an outer edge of the lid main body, and covering a side of the toilet seat in the closed state, wherein the case cover includes an extending portion, a height of the extending portion becoming low toward forward, the toilet lid has a first region and a second region, the first region is positioned forward the case cover in the closed state and the second region rises toward backward from the first region in the closed state, overlapping the extending portion, and is pivotally supported on the cover case wherein an upper end surface of the extending portion changes the height to lower toward forward, and the height to lower toward a side, a lower end portion of an inside surface of the hanging portion changing to spread outside toward downward in the second region, the inside surface of the hanging portion is linearly inclined, an inclination angle θ of the inside surface of the hanging portion is not less than 10° and not more than 30° and wherein a width in the horizontal direction of the second region of the toilet lid is substantially the same as a width in the horizontal direction of the cover case, a side surface of the second region of the toilet lid forming a generally continuous surface to a side surface of the cover case in the closed state. a main part including a function part, and a case cover covering the function part; a toilet seat attached rotatably to the case cover; and a toilet lid attached rotatably to the case cover, the toilet lid shifting between a closed state covering the toilet seat and an open state exposing the toilet seat, the toilet lid including a lid main body covering upward the toilet seat in the closed state, and a hanging portion hanging from an outer edge of the lid main body, and covering a side of the toilet seat in the closed state, wherein a lid main body covering upward the toilet seat in the closed state, and a hanging portion hanging from an outer edge of the lid main body, and covering a side of the toilet seat in the closed state, wherein the case cover includes an extending portion, a height of the extending portion becoming low toward forward, the toilet lid has a first region and a second region, the first region is positioned forward the case cover in the closed state and the second region rises toward backward from the first region in the closed state, overlapping the extending portion, and is pivotally supported on the cover case wherein an upper end surface of the extending portion changes the height to lower toward forward, and the height to lower toward a side, a lower end portion of an inside surface of the hanging portion changing to spread outside toward downward in the second region, the inside surface of the hanging portion is linearly inclined, an inclination angle θ of the inside surface of the hanging portion is not less than 10° and not more than 30° and wherein a width in the horizontal direction of the second region of the toilet lid is substantially the same as a width in the horizontal direction of the cover case, a side surface of the second region of the toilet lid forming a generally continuous surface to a side surface of the cover case in the closed state.