The invention provides a purple pottery finished product re-kiln red sintering process method comprising the steps: sintering a purple pottery semi-finished product according to a traditional method; polishing the purple pottery semi-finished product to remove burrs, to make the surface smooth, and controlling the color of the polished surface to be purple; and making the purple pottery finished product enter a kiln again, roasting, controlling the temperature to be 1180+/-10 DEG C, keeping for 10-15 minutes, powering off the kiln, naturally cooling to room temperature, and discharging out of the kiln, to obtain the re-kiln purple pottery finished product, wherein the used kiln is an electric kiln, so as to accurately control the temperature, the temperature is preferably controlled at 1180 DEG C, heat preservation is carried out for 12 minutes, and then the kiln is powered off and natural cooling is carried out to the room temperature. The obtained re-kiln finished product completely changes a traditional purple pottery finished product color into dull red, soil red and other red colors, and is bright and smooth under natural light; the product has generous, beautiful, archaic Chinese rhyme or elegant implication and meaning, and is welcomed by visitors; the process is reasonable; besides, the purple pottery finished product surface color is changed into red, the qualified rate of the finished product during kiln discharging is 80-90%, and the re-kiln success rate is high.