The invention relates to picture printing assisting equipment for a cloud printer. The picture printing assisting equipment for the cloud printer comprises a case and a paper outlet formed in the right side of the case. An L-shaped work stand is installed in the position, on the left side of the paper outlet, in the case in a hinged mode. The left side of the lower end of the work stand is provided with a horizontal groove which is connected with a hydraulic cylinder in sliding and hinged modes. A supporting rod is fixedly installed in the middle of the work stand. A connecting rod is hinged to the supporting rod. A matching groove is formed in the right side of the connecting rod and connected with an air cylinder in sliding and hinged modes. A convex block is arranged on the left side of the connecting rod. The work stand is provided with a vertical groove, and a pressing plate is installed in the vertical groove vertically in a sliding mode. The pressing plate is provided with a mating groove where the convex block can be installed horizontally in a sliding mode. The picture printing assisting equipment for the cloud printer is convenient to use, pictures can be effectively prevented from deflecting downwards or moving upwards due to splashing of ink by supporting the printed pictures and vertically flattening the pictures, and the effect that the printing quality of the pictures is improved is achieved.