Objectives: To observe the effect of Kangxian Granule in treating diffuse pulmonary fibrosis and the effect on cell factor of serum and bronchoalveoar lavage fluid(BALF).

• 摘要目的：观察中药复方抗纤颗粒加小剂量强的松对弥漫性肺间质纤维化的临床疗效和对血清及支气管肺泡灌洗液(BALF)中细胞因数的影响。