Dust mites are important allergens that induce allergic diseases such as eczema. In recent years, a close relationship between dust mites and allergic diseases has been confirmed. Current studies have confirmed the close relationship between dust mites and allergic diseases such as asthma. However, house dust mites and dust mites are commonly found in our lives. What is the difference between them? House dust mites, a common species of dust mite, breed in carpets, sofas, bedding, mattresses and pillow centers in the bedroom of the home, feeding on the dander shed by the human body. Dust mites can be found in poultry feed, warehouse site dust debris, grain silos and textile factory dust, and may or may not inhabit premises dust and carpets. Reducing the amount of dust mites in the living and working environment is very important for dust mite allergy sufferers. The most suitable conditions for dust mites to survive are temperature and relative humidity. Prevention of dust mites can be carried out by the following rules: 1. Change the temperature and humidity of the environment. The conditions for dust mites to die are temperature greater than 35℃ or less than 0℃ for 24 hours, humidity less than 50% or more than 85% cannot reproduce; 2, is to cut off their food sources, dust mite allergy patients can use effective methods according to their specific environment of living and working. 3, is to reduce the relative humidity indoors It is recommended to use high performance dehumidifiers and air conditioning units indoors to reduce the relative humidity and the total number of mites. 4. is that fabric less than or equal to 20 microns can stop the passage of all mites. Currently there are goods such as bedspreads and pillowcases for sale that prevent dust mites. It can stop the entry of dust mites. Fifth, pillowcases, mattress covers, etc. washed once a week with hot water higher than 55 ℃ can kill mites and remove most mite allergens.