This article introduced WANG Sumei’ s experience in treating recurrent respiratory tract infection in children by stages. It was believed that the lung and spleen deficiency was the pathogenesis of this disease

and it can be divided into four stages of acute stage

subacute stage

remission stage

recovery stage

and four syndromes of wind evil attacking lung

remaining evil unfinished

unconsolidation of defensive exterior

spleen and lung deficiency.Patient with wind evil attacking lung syndrome is treated with dispelling pathogenic wind for relieving superficies and ventilating lung qi

and given modified Yinqiao Powder（ 银翘散）. Patient with remaining evil unfinished syndrome is treated with clearing heat and nourishing yin

and given modified Shashen Maidong Decoction（ 沙参麦冬汤）. Patient with unconsolidation of defensive exterior syndrome is treated with consolidating superficies for arresting sweating

and given modified Yupingfeng Powder（ 玉屏风散）. Patient with spleen and lung deficiency is treated with tonifying and supplementing the lung and spleen

and given Bufei Cream Formula（ tonifying the lung cream formula

补肺膏方）.