A 3D color printing mechanism includes a sliding track (100), a slider (200), a painting nozzle (300) and a modeling nozzle (400). The slider (200) is arranged on the sliding track (100) and capable of sliding between two ends of the sliding track (100). The painting nozzle (300) is arranged on the slider (200) and comprises at least one ink jet head (310). The modeling nozzle (400) is connected to the slider (200) and includes a material squeezer head (410). The material squeezer head (410) is arranged non-collinearly with the ink jet head (310) at a direction parallel to the sliding track (100).
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