Baihe Wuyao Decoction is from Chen Xiuyuan's "Shi Fang Song Kuo". It is composed of lily two liang and Wuyao three liang. It is a famous prescription for treating spleen deficiency and qi stagnation， cold and heat mixed with stomach pain. Professor Zhang Shengsheng grasped the functions of Baihe Wu Decoction in supplementing spleen， spleen and stomach Yin， lowering qi and moistening dryness， regulating qi and blood， and applied it in the treatment of acid vomiting， stomach pain， stomach fullness and other diseases caused by deficiency of spleen Yin， spleen and stomach Yin deficiency and qi stagnation. The application scope of this prescription was expanded， and the clinical effect was remarkable.