Humidifying device of printing machine

The utility model discloses a printing machine humidifying device which comprises an installation frame and a humidifier, a printing roller is arranged on the installation frame and close to the top end, a humidifying mechanism is arranged below the printing roller, a guide frame is arranged on the outer side of the humidifying mechanism, a dispersing mechanism is arranged on the inner side of the guide frame, and the dispersing mechanism is arranged on the outer side of the guide frame. A recycling mechanism is arranged at the bottom of the guide frame, a water storage box is arranged on the left side of the mounting frame, and a flushing mechanism is arranged above the water storage box. The spray humidification device has the advantages that in the spray humidification process, condensate water can be prevented from dripping on the surface of the printing roller, the phenomenon that printing effect is affected due to uneven distribution of printing ink on the surface of the printing roller is avoided, the