The utility model provides a 3D prints shower nozzle automatic switching control equipment and 3D printer. A 3D prints shower nozzle automatic switching control equipment, wherein includes base, at least two 3D printing shower nozzle and at least two the shower nozzle holders that are used for supporting 3D printing shower nozzle, the base be equipped with with the corresponding linear guide of shower nozzle holder quantity, each shower nozzle holder correspondence is established on each linear guide, both ends are equipped with first electro -magnet and second electro -magnet respectively with the shower nozzle holder that corresponds corresponding position about each linear guide, the shower nozzle holder can the first electro -magnet that corresponds and the effect of second electro -magnet are followed down linear guide makes a round trip to slide. The utility model discloses mode with an electromagnetic drive cooperation attenuator has realized that 3D prints the shower nozzle andis printing the exchange between in -process operating condition and the armed state to interference and the interference between shower nozzle and the table surface between many shower nozzles havebeen avoided.