The invention relates to an environment-friendly robot, and in particular to an environment-friendly robot for cleaning armrests and handrails. The environment-friendly robot comprises a first motion group, a second motion group, a washing and brushing device, a wiping device, a water supply device, a control device and a support frame, wherein the first motion group is arranged at the front end of the support frame; and the second motion group is arranged at the back end of the support frame. The washing and brushing device is arranged at the middle front side of the support frame. The water supply device is arranged on the support frame. The control device is arranged on the support frame; and the control device is used for controlling operations of the first motion group and the second motion group. The environment-friendly robot provided by the invention, when placed on a handrail or armrest, can be installed on the handrail by virtue of own clamping force and can automatically walk, so as to complete tasks of cleaning as well as washing and brushing the handrail or armrest; by virtue of a water storage device which is arranged in the robot, water can be supplied while cleaning is implemented, so that endurance is enhanced; and by virtue of the wiping device which is arranged at the back of the robot, residual water can be removed.