作为装修家具建材中的常见产物，甲醛的危害毋需多言。早在2004年，该物质已被国际癌症研究机构IRAC升格为一类致癌物，也就是最容易诱发癌症的一类物质。此外，甲醛还有可能诱发白血病，导致孕妇流产、胎儿畸形。
As a common product in the decoration of furniture and building materials, the harm of formaldehyde needs no more words. As early as 2004, the substance has been upgraded to a class of carcinogens by the international agency for research on cancer (Irac), which is the most likely to induce cancer. In addition, formaldehyde may also induce leukemia, leading to pregnancy abortion, fetal malformation.
刺激作用
Stimulating effect
甲醛的主要危害表现为对皮肤粘膜的刺激作用。甲醛在室内达到一定浓度时，人就有不适感，甲醛浓度过高会引起急性中毒，表现为咽喉烧灼痛、呼吸困难、肺水肿、过敏性紫癜、过敏性皮炎、肝转氨酶升高、黄疸等.
The main harm of formaldehyde is irritation to skin and mucous membrane. When formaldehyde reaches a certain concentration indoors, people will feel uncomfortable. If formaldehyde concentration is too high, it will cause acute poisoning, such as sore throat, dyspnea, pulmonary edema, allergic purpura, allergic dermatitis, elevated liver transaminase, jaundice, etc
慢性危害
Chronic hazards
甲醛有刺激性气味，低浓度即可嗅到，人对甲醛的嗅觉阈通常是0.06-0.07mg/m3。但有较大的个体差异性，有人可达2.66mg/m3。长期、低浓度接触甲醛会引起头痛、头晕、乏力、感觉障碍、免疫力降低，并可出现瞌睡、记忆力减退或神经衰弱、精神抑郁；慢性中毒对呼吸系统的危害也是巨大的，长期接触甲醛可引发呼吸功能障碍和肝中毒性病变，表现为肝细胞损伤、肝辐射能异常等。
Formaldehyde has a pungent odor, which can be smelled at low concentration. The olfactory threshold of formaldehyde is usually 0.06-0.07mg/m3. However, there is a large individual difference, some people can reach 2.66mg/m3. Long term and low concentration exposure to formaldehyde can cause headache, dizziness, fatigue, sensory disturbance, reduced immunity, drowsiness, memory loss, neurasthenia and mental depression; chronic poisoning also has great harm to respiratory system, and long-term exposure to formaldehyde can cause respiratory dysfunction and liver toxic lesions, manifested as liver cell damage and abnormal liver radiation energy.
基因突变
Gene mutation
甲醛能引起哺乳动物细胞核的基因突变、染色体损伤、0"八断裂。甲醛与其他多环芳烃有联合作用，如与苯并芘的联合作用会使毒性增强.尤其对孕妇危害更大。
Formaldehyde can cause gene mutation, chromosome damage and 0 "eight breaks in mammalian nucleus. Formaldehyde and other polycyclic aromatic hydrocarbons have combined effect, such as the combined effect of benzo pyrene will enhance the toxicity, especially to pregnant women.
容易致癌
Easy to cause cancer
动物研究发现，大鼠暴露于每立方米15ug甲醛的环境中11个月，可致鼻癌。美囯囯家癌症研究所2009年5月12日公布的一项最新研究成果显示，频繁接触甲醛的化工厂工人死于血癌、淋巴癌等癌症的几率比接触甲醛机会较少的工人高很多。研究人员调查了2.5万名生产甲醛和甲醛树脂的化工厂工人，结果发现，工人中接触甲醛机会最多者比机会最少者的死亡率高37%。研究人员分析，长期接触甲醛增大了患上霍奇金淋巴瘤、多发性骨髓瘤、骨髓性白血病等特殊癌症的几率。
Animal studies have found that rats exposed to 15 UG / m3 formaldehyde for 11 months can cause nasal cancer. According to a new study published by the National Cancer Institute of the United States on May 12, 2009, workers in chemical factories who are frequently exposed to formaldehyde are much more likely to die of cancer such as blood cancer and lymphatic cancer than workers with less exposure to formaldehyde. Researchers surveyed 25000 workers in chemical plants that produce formaldehyde and formaldehyde resin. The results showed that the workers who had the most exposure to formaldehyde had a 37% higher mortality rate than those who had the least exposure to formaldehyde. Long term exposure to formaldehyde increases the risk of special cancers such as Hodgkin's lymphoma, multiple myeloma, and myeloid leukemia, the researchers said.