Abstract: A toilet device includes an electric opening/closing unit configured to open and close at least one of a toilet seat or a toilet lid. The electric opening/closing unit includes a case, a motor, an output shaft, a transmission mechanism and a spring. The output shaft outputs a rotation of the motor to one of the toilet seat or the toilet lid. The transmission mechanism transmits the rotation of the motor to the output shaft. The spring is connected to the transmission mechanism and the output shaft. The spring urges the output shaft in a rotational direction of the output shaft. The transmission mechanism includes an engaging part engaging the spring. The engaging part engages an end part of the spring at the transmission mechanism side and restricts the end part from moving in a circumferential direction of the spring and from moving in a radial direction of the spring.