This paper summarized professor ZHOU Yuhong′s experience in treating immune thrombocytopenic purpura（ITP） based on ying-wei（营卫） theory. It is believed that impairment of both ying（营） and wei qi（卫气） is the disease root of ITP

and the pathogenesis is related to the "disharmony between ying and wei qi caused by strong wei qi and weak ying". According to syndrome differentiation

the etiology of ITP is classified into external invasion

internal damage and congenital endowment. Different treatment methods are applied corresponding to different causes. For external invasion

it is recommended to reinforce healthy qi

dispel pathogen

boost qi and enrich yin; in terms of disease cased by emotional disorders

the method should be boosting qi and enriching yin

nourishing blood and calming the mind; regarding exhaustion-fatigue

supplementing and boosting qi-blood is necessary; for internal damage brought by unbalanced diet

enriching yin and clearing heat

cooling the blood and stanching bleeding are suggested; for congenital insufficiency

supplementing and boosting spleen-kidney is recommended.