With emodin, chrysophanol and stilbene as ma terial index, Polygonum multiflorum Thunb. and its adulterants are identificated by TLC and UV-spectrum.The method is simple and dependable.

• 采用薄层色谱法和紫外光谱法，以大黄素、大黄酚、二苯乙烯甙作为客观指标，鉴别何首乌及其混伪品，方法简便、可靠。