Abstract：Professor SUN Yuxin is one of the first famous Chinese medicine doctors in Henan Province. Xiaoyao powder is one of his commonly used prescriptions. Through years of clinical experience summary， Professor Sun believes that in addition to the syndrome of liver depression，blood deficiency and spleen weakness，the indications of Xiaoyao powder also include the syndromes of liver- spleen deficiency，liver- spleen deficiency with liver depression and liver- spleen deficiency with phlegm stasis.