Toilet stool

Provided is a toilet stool capable of easily manufacturing an upper forming body. The toilet stool is provided with: an upper forming body (30) having an upper surface section (11) that forms the upper surface of a toilet stool (10); and a lower portion forming body (40) having an inner wall portion (41) joined to an inner edge portion of the upper surface section (11) and an outer wall portion (42) joined to an outer edge portion of the upper surface section (11). A space part (A) is formed between the inner wall portion (41) and the outer wall portion (42), and the size in the vertical direction from the lower end of the space part (A) to the upper surface (47U) of the inner wall portion (41) is larger than the size in the vertical direction from the upper end of the space part (A) to the upper surface (47U) of the inner wall portion (41). According to this configuration, the joining surface (39) joined to the lower forming body (40) can be formed so as not to substantially protrudetoward the lower surface