To discuss the relationship between suspend particles in the air and respiratory diseases.After the fine particle in the air inhaled into the lung, they retained mainly alveolar ducts and alveoli.

• 颗粒物在呼吸道诱发炎症反应并导致炎性细胞因子的产生,诱发上皮细胞的增生,增加了呼吸道疾病的发生率;