Characteristics and Influential Factors of PM_2.5 in Hospitals

In order to provide guidance and references for the research on PM_2.5 in hospitals, the features, sources and average concentration of PM_2.5 in hospitals were analyzed.The influential factors from indoor air, outdoor air and the activity of people on the concentrations of PM_2.5 in indoor air of hospitals were pointed out based on the researches at home and abroad.Some discussions and suggestions about measures to prevent and control the indoor air quality in hospitals were put forward.