Under-glaze colored decoration method of bone china

The invention relates to an under-glaze colored decoration method of bone china. The method includes an under-glaze colored decoration firing process and a pigment preparation technology, which includes transferring figures through pigment paint or labels for porcelain to a biscuit after lower temperature biscuit firing at a temperature of 700-800 DEG C, covering a protective layer, buckling a decorated ware on a profiling kiln furniture, performing firing at a temperature of 1250-1290 DEG C, wherein figure surfaces cannot be bruised, performing polishing on figure bases after firing, spraying fritted glaze slip, and performing glaze firing at a temperature of 1170-1200 DEG C. The figure surfaces are arranged under a glaze layer completely, and the method is a novel color decoration different from bone china over-glaze color figure for in-glaze decoration. Blanks are performed biscuit firing at a low temperature, the figure bases are fired through oxidizing flames at a high temperature (1250-1290 DEG C), and