Abstract: Frother was synthesized with crude sulfate turpentine oil as raw materials and PS (an organic acid) as catalyst. At dosage of catalyst 20%, ratio of water to raw materials 2:1, reaction temperature 60℃ and reaction time 8 h,the content of total monohydric alcohols was 32.42% and the content of total effective fractions was 55.56%. All quality indexes and flotation capability of the frother were significantly superior to those of the marketed industrial products.