This paper summarized Professor LIN Yi′s experience in the treatment of advanced metastatic breast cancer（MBC）. She holds the theory that MBC is mostly caused by the depletion of healthy qi and the flow and scurry of phlegm and blood stasis. In terms of syndrome differentiation

deficiency and excess should be distinguished for the whole syndrome

while yin and yang should be differentiated for the local syndrome. She advocates that interior and exterior treatment should be combined with interior treatment as priority. Interior treatment is mainly to strengthen the root by reinforcing healthy qi constantly and dispelling pathogens occasionally; and according to the relationship between healthy qi and pathogen

LIN usually prescribes self-made Baihua Qiling Decoction （白花芪苓汤） and Liuzi Yangqin Decoction （六子养亲汤） to reduce phlegm and blood stasis and invigorate spleen and kidney when pathogenic qi is excessive and healthy qi remains; when there is deficiency of healty qi and exuberance of pathogens

modified Guipi Decoction （归脾汤） is used to consolidate qi and blood. Regarding exterior treatment

it is usually to resolve toxins

disperse edema

and relieve pain

and Liquid of Tuhuanglian（Radix seu Caulis Berberidis Gagnepainii） prescription is commonly applied.