The invention provides a multifunctional ceramic 3D printer, relates to a 3D printer, and solves the problems that in the prior art, a printing material is single in structure and a blank is slow to dry. The multifunctional ceramic 3D printer comprises a discharge nozzle, wherein a plurality of gears are circumferentially distributed at the discharge nozzle; the shaft of each gear is a hollow shaft; one end of the gear shaft is rotatably matched with the discharge nozzle while the other end of the gear shaft is fixedly connected to a gear; an inner thread is arranged on the inner cavity wall of the gear shaft; a telescopic tube is arranged in the inner cavity of the gear cavity; the telescopic tube is provided with an outer thread matched with the inner thread; one end of the telescopic tube movably penetrates through the pipe wall of the discharge nozzle while the other end of the telescopic tube communicates to a secondary discharge pipe; and an upper gear ring matched with all gearsrotatably sleeves the discharge nozzle above the gears. Secondary slurry and slurry of a primary feeding pipe are mixed by means of the telescopic tube which can be radially adjusted in a telescopicmanner relative to the discharge nozzle, so that the printed slurry is of a composite structure.