Indoor spraying robot

The invention provides an indoor spraying robot which comprises a chassis provided with universal wheels and driving wheels and a vertical cabinet arranged on the chassis, and is characterized in that the vertical cabinet is provided with a lifting column, a translation mechanism moving up and down along the lifting column, and a spraying mechanism horizontally moving along the translation mechanism and provided with a spraying pipe, wherein the lifting column is connected to the vertical cabinet through the first-stage lifting mechanism, the translation mechanism is connected to the lifting column through the second-stage lifting mechanism, and the spray pipe is connected to the translation mechanism through the rotating platform. Coating of indoor working faces of buildings such as walls or ceilings is achieved, the labor intensity of workers in the spraying operation process is reduced to the maximum extent, and harm of toxic and harmful materials to human bodies is avoided. Meanwhile, a first-stage liftin