To provide a riding type lawn mower in which the safety in driving backward is improved at the time of driving a mower It is provided a PTO lever (220) for turning on and off a mower 1 a forward movement pedal 201 and a backward movement pedal 202 a transmission 200 for a travelling device a backward movement speed changing/coupling mechanism coupled to the backward movement pedal 202 and a trunnion shaft 211 of the transmission 200 to change vehicle speed in accordance with the operation of the backward movement pedal 202 and a PTO backward movement regulating/coupling mechanism for coupling the PTO lever 220 and the backward movement pedal 202. The PTO backward movement regulating/coupling mechanism is provide with a plate 231 connected to the PTO lever 220 and actuated in accordance with the operation of the PTO lever 220 and a pin 235a secured to a base part of the backward movement pedal 202 and capable of sliding inside a plate long hole 231a along with the actuation of the backward movement pedal 202. The operation of the PTO lever 220 for turning on actuates the plate 231 to regulate sliding of the pin 235a inside the long hole 231a, thereby regulating the maximum speed provided by the backward movement pedal 202 to lower speed side.
