Abstract: The present application relates to an apparatus and method for three-dimensional printing. The apparatus comprises a gantry, a tilting print head and a rotary table. The tilting print head comprises an extruder, an elongated nozzle connected to the extruder and a filament tube connected to side-entrance of the extruder. The extruder is configured to rotate around the tilting axis. The filament tube is configured to feed the printing material into the extruder. The tilting print head is configured to control the printing material to enter the extruder through the filament tube, spiral through the extruder and enter the elongated nozzle. As the entrance is arranged on the side of the extruder and the filament tube is close to the tilting axis, the printing material can be more stable when the tilting print head rotates upward or downward.