There are more types of mites, and some of them are closely related to human health conditions, such as the common dust mite and scabies mite. Generally mites are contagious, but most of them are less contagious. 1. dust mites: feed on human secretions and dander, reproduce very fast, their secretions and excretions can lead to human infection, serious asthma, allergic dermatitis, allergic rhinitis and other diseases, but the allergic reactions caused by dust mites are generally not contagious; 2. scabies mites: often hosted in the soft skin folds, such as armpits, elbow sockets, groin and other parts of the body, the main symptom performance is with strong itching. Scabies mites can be infectious through direct skin contact or indirect contact with towels, pillowcases, etc., and the indirect contact infection rate is relatively low. The scabies mite present in pets can also be transmitted to humans through clothing and bedding. Mites are generally contagious and can be prevented and treated by diligent bathing, changing clothes and drying clothes and bedding. In case of serious rash from mite infection, it is necessary to seek medical attention in time to avoid serious sequelae.