The invention discloses a processing technology of high-temperature-resisting colored fluorescent ceramic. Ceramic production materials and equipment are as follows: porcelain clay, fluorescent powder, hexagonal boron nitride, blank preparation mold, a placement frame, a blank trimming tool and a coloring and firing machine; the processing technology of the ceramic comprises the following steps: step 1: preparing the porcelain clay: removing impurities in the clay by utilizing a screen mesh; pouring the clay into water and pouring the hexagonal boron nitride into the water; uniformly blending;step 2, preparing a blank: shaping the selected clay on the blank preparation mold to prepare a ceramic blank; step 3: drying: putting the ceramic blank on the placement frame and drying in a shady place; trimming the surface of the ceramic blank by utilizing the blank trimming tool. According to the processing technology of the high-temperature-resisting colored fluorescent ceramic, the hexagonal boron nitride is added into the porcelain clay and the fluorescent powder is added into colored glaze, so that the heat-resisting performance of the ceramic can be greatly improved and the heat-resisting temprature can reach 700 to 800 DEG C; a phenomenon that the ceramic is cracked in a utilization process is effectively prevented.