To permit comfortable use by setting temperature higher than a conventional low setting temperature intended for energy conservation and to set temperature lower than said conventional low temperature in consideration of less heat radiation when the lid is closed so that a user may not suffer from discomfort due to heat radiation at a time when the lid is opened.

This toilet bowl device is furnished with a toilet bowl, a toilet seat mounted on the toilet bowl, a heater for warming the toilet seat, a turnable toilet lid, a human body detection sensor that detects a human body, and a toilet lid opening and closing sensing means that detects the opening and closing of the lid. And the device is furnished also with a controlling device M that sets the temperature at the first set temperature T1 if a human body is detected with the human body detection sensor, and at the second temperature T2, Δt1 lower than the first setting temperature T1 if a human body is not detected with the human body detection sensor, and at the third setting temperature, Δt2 lower than the second setting temperature T2 if the closure of the lid is detected.