Riding lawn mower with connecting device

A riding lawn mower comprising:

• a frame, a mowing device, the mowing device mounted to a bottom of the frame, a functional unit attached to a front of the frame, and a motor group together with a power supply mounted to the frame, wherein the riding lawn mower also comprises a connecting device connecting the frame and the functional unit, the connecting device comprising a first connector attached on the front of the frame, a second connector attached to the functional unit, and a third connector adapted for fixedly connecting the first connector and the second connector, the first connector and the second connector respectively defining through-holes thereon, the third connector extending through the through-holes of the first and the second connectors to fixedly connect the first and the second connectors, wherein the connecting device further comprises a reinforcing plate with one end thereof fastened to the front of the frame and the other end thereof fastened to the functional unit, the reinforcing plate positioned at a bottom of the first connector and the second connector.