甲醛为较高毒性的物质，在我国有毒化学品优先控制名单上甲醛高居第二位。甲醛已经被世界卫生组织确定为致癌和致畸形物质，是公认的变态反应源，也是潜在的强致突变物之一。研究表明，甲醛具有强烈的致癌和促癌作用。甲醛对人体健康的影响主要表现在嗅觉异常、刺激、过敏、肺功能异常、肝功能异常和免疫功能异常等方面。其浓度在每立方米空气中达到0.06-0.07mg/立方米 时，儿童就会发生轻微气喘。当室内空气中甲醛含量为0.1mg/立方米 时， 就有异味和不适感;达到0.5mg/立方米 时，可刺激眼睛，引起流泪;达0.6mg/立方米 ，可引起咽喉不适或疼痛。浓度更高时，可引起恶心呕吐，咳嗽胸闷，气喘甚至肺水肿;达到30mg/立方米 时，会立即致人死亡。
Formaldehyde is a highly toxic substance, ranking second in the priority list of toxic chemicals in China. Formaldehyde has been identified as carcinogenic and teratogenic substances by the World Health Organization. It is recognized as a source of allergy and one of the potential strong mutagens. Research shows that formaldehyde has strong carcinogenic and carcinogenic effects. The main effects of formaldehyde on human health are abnormal smell, stimulation, allergy, abnormal lung function, abnormal liver function and abnormal immune function. When the concentration reaches 0.06-0.07mg/m3 in air, children will have slight asthma. When the formaldehyde content in indoor air is 0.1mg/m3, there will be peculiar smell and discomfort; when it reaches 0.5mg/m3, it can stimulate eyes and cause tears; when it reaches 0.6mg/m3, it can cause throat discomfort or pain. When the concentration is higher, it can cause nausea and vomiting, cough and chest tightness, asthma and even pulmonary edema; when it reaches 30mg / m3, it will immediately cause death.
长期接触低剂量甲醛可引起慢性呼吸道疾病，引起鼻咽癌、结肠癌、脑瘤、月经紊乱、细胞核的基因突变，DNA单链内交连和DNA与蛋白质交连及锈钢铸件 保定建筑设计 螺杆式启闭机 保定搬家 电缆挂钩 保定室内设计培训 冲压机抑制DNA损伤的修复、妊娠综合症、引起新生儿染色体异常、白血病，引起青少年记忆力和智力下降。在所有接触者中，儿童和孕妇对甲醛尤为敏感，危害也就更大。据相关资料统计显示:人类有69%的病症与室内环境有关，我国每年有13万人死于室内污染，90%以上的幼儿白血病患者都是住进新装修房一年内患病的。
Long term exposure to low-dose formaldehyde can cause chronic respiratory diseases, cause gene mutations in nasopharyngeal carcinoma, colon cancer, brain tumor, menstrual disorder, nucleus, DNA single strand and DNA protein cross, inhibit DNA damage repair, pregnancy syndrome, cause chromosomal abnormalities in newborns, leukemia, and cause memory and intelligence decline in adolescents. In all contacts, children and pregnant women are particularly sensitive to formaldehyde, and the harm is even greater. According to relevant statistics, 69% of human diseases are related to the indoor environment, 130000 people die of indoor pollution every year in China, and more than 90% of children with leukemia are ill in the newly decorated house within one year.