A device for printing silicon sealant, including a coating device, a horizontal coating stage, and an elevating device, wherein: the elevating device is connected with the horizontal coating stage and is configured to adjust the height of the horizontal coating stage; the horizontal coating stage can be moved to a position right below a screen and fully contacted with the screen under the adjustment of the elevating device; and the coating device is configured to be moved to a position above the screen to coat silicon sealant in a pattern area of the screen after the horizontal coating stage is fully contacted with the screen.