To analyze the characteristics of the prescription of Bentun Decoction in Synopsis of the Golden Chamber.It is put forward that white barks of the sweet and the bitter plum roots in the prescription are the same drug. Based on the analysis of the characteristics of Zhong Jing’s use of Guizi(Ramulus Cinnamomi)in the treatment of emotional diseases, it is considered that the addition of Guizi(Ramulus Cinnamomi) in Bentun Decoction can soothe the liver to dredge meridians, make the adverse-qi downwards,and warm the kidney to relieve depression. Meanwhile, the different use of Bentun Decoction and Chaihu (Radix Bupleuri) prescriptions is discussed. And two proven cases are presented.