In　this　study,　based　on　a　cross-sectional　study　among　9597　preschoolers　in　Shandong　of　China,　we　quantitatively　evaluated　influences　of　lifestyle　behaviors　and　air　treatment　equipment　on　indoor　damp　exposures　and　thus　on　risks　of　childhood　pneumonia.　In　the　two-level　multivariate　logistic　regression　analyses,　childhood　pneumonia　was　significantly　associated　with　parent-reported　damp　clothing/bedding　and　visible　mold　spots　or　damp　stains.　These　associations　were　weaker　among　preschoolers　from　families　who　frequently　opened　the　child＇s　bedroom　windows,　frequently　cleaned　the　child＇s　bedroom,　and　frequently　exposed　beddings　to　sunshine　(references:　not　frequently),　as　well　as　among　preschoolers　without　usage　of　air　humidifier　and　air　conditioner　and　with　usage　of　air　purifier.　Our　results　indicate　that　frequently　keeping　household　ventilation　and　cleanness,　and　exposing　beddings　to　sunshine,　as　well　using　air　purifier　could　decrease　the　effects　of　household　damp-related　exposures　on　childhood　pneumonia,　but　using　air　humidifier　and　air　conditioner　could　increase　the　effects.