粉尘螨是人体螨病的主要病原螨之一。我们自1995年12月至1996年11月对该螨的生境及季节消长进行了研究。结果显示，粉尘螨生境分布广泛，在地脚粉，动物饲料及部分中药材中孳生密度较高。孳生密度自5月份起增高，至7、8月份达到高峰，10月份开始下降，全年可维持5个民的较高水平。提示，有关职业人员在此期间应做好防护工作。 Dust mite is one of the major pathogen mites in human body. We studied the habitat and seasonality of the mites from December 1995 to November 1996. The results showed that Dust mite habitat is widely distributed and has high density in ground powder, animal feed and some traditional Chinese medicines. The breeding density has risen since May and peaked in July and August, with a decline in October, maintaining a high level of 5 people throughout the year. Prompt, the relevant professional staff should do a good job of protection during this period.