Abstract: This article deals with the research on the rod tint and color instensity of immedial indone effected by the temperature and quantity of sulfur used in the process. The method employed in this experiment can be briefly described as follows: (1) Finding out the most appropriate temperature by using a determin-ing quantity of sulfur; (2) Finding out the most exact quantity of sulfur by the temperature found; and (3) Finding out again the most desirable temperature by the known quantity of sulfur. With these repeated findings an immedial indone with a strong red tint and deep color intensity is obtained. It is found that the quantity of sulfur used is 1.5 times of that of indophenol at a temperature of 115?116℃., if the quantity of sodium sulfide used is 3 times of that of indophenol (±8%).