据1999年11月28日《中国商报》报道空调综合症与空调环境中的负离子浓度下降有关。因此,人们想出了新的对策,发明了人工空气负离子发生器,使室内负离子浓度增高,以减少空调综合症的发生。但事物总是具有两面性的。据我国科学家发现,高浓度人工空气负离子对人体是有害 According to November 28, 1999, “China Business” reported air conditioning syndrome and air conditioning environment in the negative ion concentration decreased. Therefore, people came up with a new countermeasure, invented the artificial air anion generator, so that indoor negative ion concentration increased to reduce the occurrence of air-conditioning syndrome. But things are always two-sided. According to our scientists found that high concentrations of artificial air negative ions on the human body is harmful