To provide a zirconia-based composite ceramic sintered compact capable of being colored to white appropriate for a dental prosthesis while maintaining its mechanical and physical properties, and also provide a method for producing the same. The method for producing the zirconia-based composite ceramic sintered compact includes semi-sintering a zirconia-alumina composite ceramic containing an alumina particle and a zirconia particle comprising of tetragonal zirconia containing ceria of 8 to 12 mol%, forming the composite ceramic dipping the formed composite ceramic in a neodymium ion solution or complex solution drying the dipped composite ceramic and finally sintering it.
