This paper discussed the treatment of chronic cough of phlegm-dampness type based on the theory of “removing the earth stagnation”. It is believed that stagnation of qi in the middle energizer caused malfunction of water metabolism in the human body， which is the key pathogenetic mechanism leading to phlegm-dampness cough. Pathogenesis like cold and dampness attacking the spleen， dampness-heat obstruction， weakness of the middle energizer， failure to ascend clear yang， and internal blazing of yin fire may lead to “earth stagnation”， which triggered phlegm-dampness cough. The treatment advocated “removing the stagnation” to improve qi transformation in the middle energizer， eliminate stagnation， and use different treatment methods such as warming the middle， circulating qi， transforming phlegm and dampness based on different disease cause and mechanism to calm cough. As for prescriptions， Jiangling Banxia Decoction （姜苓半夏汤） could be used for cold-dampness syndrome， Banxia Xiexin Decoction （半夏泻心汤） plus Xiangsu Powder （香苏散） used for damp-heat syndrome， and Buzhong Yiqi Decoction （补中益气汤）， Tiaozhong Yiqi Decoction （调中益气汤）， Shengyang Yiwei Decoction （升阳益胃汤） and Bupiwei Xieyinhuo Shengyang Decoction （补脾胃泻阴火升阳汤） could be selected for spleen-stomach weakness syndrome according to different characteristics and pathogenesis.

It is believed that the fundamental pathogenesis of the connective tissue diseases-associated interstitial lung disease （CTD-ILD） is kidney essence deficiency， with lung collateral obstruction throughout the disease， and environmental toxin pathogen is the important causative factors for the development of CTD-ILD. This article proposed to restore origin and alleviate bi （痹） for CTD-ILD， for which restoring origin means tonifying the lungs， spleen and kidneys to bank up the roots and consolidate the original qi， with modified Erxian Decoction （二仙汤） plus Liu Junzi Decoction （六君子汤）； alleviating bi means expelling wind and dredging collaterals， and eliminating the mass to restore the smoothness of the lung collaterals， with paired medicines of Chuanshanlong （Dioscorea nipponica）-Dilong （Kalanchoe pinnata）， Vinegar-processed Sanleng （Sparganium stoloniferum）-Vinegar-processed Ezhu （Curcuma zedoaria）， and stem-type medicines， and emphasized on removing the environmental toxin pathogens to facilitate the recovery of healthy qi.