The invention discloses a hotel meal delivery robot and its working method, comprising a box body, an infrared detector, a terminal processor, an exhaust fan, an electric telescopic rod, an electric mechanical arm, and an electric wheel. The top of the box body is fixedly installed with The control box, the terminal processor is installed on the inner wall of the control box, the infrared detector is fixedly installed on the inner wall of the control box, the inside of the box is provided with a suction groove, and the exhaust air The machine is fixedly installed on the outer wall of the box body, the suction port of the exhaust fan is connected with the suction groove, the sliding plate moves to the left, the sealing plate overcomes the elastic force of the torsion spring and rotates outward, and then enters the sliding groove to realize When the box is opened, the moving box drives the tableware to move to the outside of the box, starts the electric mechanical arm, and the electric mechanical arm moves upwards to press against the clamping groove set on the outer wall of the anti-scalding handle to take out the dishes and serve as a service The protective function of personnel's hand can avoid the occurrence of scald accidents.