The invention discloses an omni-directional climbing type glass curtain wall cleaning robot. The omni-directional climbing type glass curtain wall cleaning robot comprises a rectangular shell, a climbing mechanism, a cleaning mechanism and a clean water recycling mechanism, wherein partition plates in the rectangular shell divides the rectangular shell into a clean motor room, a water storage chamber and a control room; a solar panel is mounted at the upper end surface of the rectangular shell, a water filter screen is arranged in the water storage chamber, and the water filter screen dividesthe water storage chamber into a water recovery storage chamber and a clean water storage chamber; the control room is internally provided with a controller and a storage battery; and the climbing mechanism comprises stepping motors, spring telescopic rods, first cylinders, first vacuum chucks, second cylinders, second vacuum chuck, a first air pump, a second air pump, a third air pump, a fourth air pump, a first main air pipe, first branching air pipes, a second main air pipe, second branching air pipes, a third main air pipe, third branching air pipes, a fourth main air pipe, fourth branching air pipes. The omni-directional climbing type glass curtain wall cleaning robot has the beneficial effects of simple structure and high practicability.