The invention relates to the technical field of glass cleaning robots and discloses an aerial working robot comprising a case; a first connecting plate and a second connecting plate are fixedly connected to the rear side and the two sides of the inner side of the case respectively, propellers are installed on the back face of the first connecting plate and the outer side face of the second connecting plate, servo motors matched with the propellers are installed on the front surface of the first connecting plate and the inner side face of the second connecting plate, and a first water tank anda second water tank are respectively fixedly installed in the case from bottom to top. According to the aerial working robot in the invention, the propellers on the two sides enable the robot to haveextremely strong windproof effect during aerial operation and are less affected by climate; meanwhile, when the movement track of the machine deviates from a preset route, a certain degree of adjustment can also be carried out through the propellers at the two sides; moreover, the product is relatively simple and cheap in component, and the price of the finished product can be much cheaper than that of the traditional aerial working robots.