作者就木尘的主要生物学作用;支气管气喘、肺脏的损害、与癌症的关系、过敏性皮炎及木尘车间空气中的卫生标准,进行了文献综述。由木尘导致的气喘有三种反应类型:(1)速发型气喘;(2)迟发型气喘;(3)双重反应型。反应类型与木尘剂量无直接关系,而与接触的木材品种有关。最初症状包括流涕、打喷嚏、咳嗽、胸闷、呼吸困难,进而气喘。开始常在下班后或晚间睡眠时发作,以后可在上班后立即出现,夜晚症状更为严重,患者肺功能有明显改变。其机理目前未完全澄清。软木尘肺患者肺病理切片检查可出现肺泡间隔明显增厚,肺泡间隔及小支气管、小血管周围有网状纤维及胶原纤维增生。硬木尘肺患者胸部 X 线表现为两肺门扩大,肺纹理扭曲变形,可见 The authors reviewed the major biological roles of wood dust; bronchial asthma, lung damage, the association with cancer, allergic dermatitis, and hygiene standards in the wood dust workshop. There are three types of asthma attacks caused by wood dust: (1) rapid onset asthma; (2) delayed asthma; (3) dual response. The type of reaction is not directly related to the dose of wood dust but is related to the wood species in contact. The initial symptoms include runny nose, sneezing, coughing, tightness in the chest, difficulty breathing, and asthma. Start often after get off work or at night during sleep episodes, after work immediately after work appears more severe at night, patients with significant changes in lung function. The mechanism is not fully clarified. Lung pathological examination of cork pneumoconiosis patients may be significantly increased alveolar septum, alveolar septum and small bronchial, small blood vessels around the reticular fibers and collagen fibers hyperplasia. Hard-wood pneumothorax showed chest X-ray enlargement of the two hilar, distortion of the lungs texture distortion, we can see