A device for producing food with various patterns is characterized by comprising a main control machine, a conveyor belt and a plurality of coloring units, wherein the conveyor belt is driven by a servo motor to horizontally convey, and the carrier surface of the conveyor belt is provided with a plurality of material trays along the conveying direction of the conveyor belt at equal pitch; the coloring units correspond to the material trays and are arranged along the conveying direction of the conveyor belt at equal interval, each coloring unit comprises an embedded computer microcontroller, a X-axis movement mechanism, a Y-axis movement mechanism, a Z-axis movement mechanism, a spray mechanism driven by the Z-axis movement mechanism, a storage device for feeding to the spray mechanism, and material tray clamp mechanisms which are horizontally and oppositely arranged on the two sides of the conveyor belt; and the embedded computer microcontroller of each coloring unit is connected with the main control machine through a network communication device, and controls the action of all the movement mechanisms, the spray mechanism and the material tray clamp mechanisms according to the received data and command of the main control machine.