This paper, based on a research of the fruit of Berberis heteropoda Schrenk of Xingjiang, attempts to exploit the utility of the pigment of this plant as possible extracted material for pigment products. The research is finished by use of the theories and methods of many subjects, such as botany, plant chemistry, food hygiene and toxicology. The pigment is purified by the method of adsorption-disadsorption by macroporous adsorption resin NKA-9 and is discerned roughly. A kind of stability matter has been se...