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本文以某木材加工厂在职接触甲醛工人１０４人为调查对象，进行了甲醛职业危害的调查，结果表明长期接触空气浓度在３ｍｇ／ｍ３左右的甲醛，工人头昏、胸闷、咽充血、慢性鼻炎等症状体征出现率显著高于对照组；肺功能亦有不良影响，以小气道功能异常为主，与对照组相比，差别有极显著性（Ｐ＜０．０１）．实验室末稍血白细胞计数及血红蛋白测定在两组间未见显著差异。
In this paper, a wood processing factory serving 104 workers exposed to formaldehyde for the investigation of occupational hazards of formaldehyde, the results show that long-term exposure to air concentration of about 3mg / m3 of formaldehyde, workers dizziness, chest tightness, pharyngeal congestion, chronic rhinitis and other symptoms Signs were significantly higher than the control group; pulmonary function also had adverse effects, with small airway dysfunction, compared with the control group, the difference was significant (P <0.01). There was no significant difference between the two groups in laboratory leukocyte counts and hemoglobin.