In　2013,　a　comprehensive　investigation　of　environmental　conditions　was　carried　out　in　schoolchildren＇s　houses　during　winter　and　summer　in　Beijing,　China.　The　houses　were　divided　into　two　Groups　(Group　A:　unhealthy　children＇s　houses;　Group　B:　healthy　children＇s　houses).　According　to　the　field　measurement,　inappropriate　thermal　environment　contributed　by　indoor　low　temperatures　and　RHs　in　winter　and　dampness　in　summer　could　affect　childhood　health.　The　beyond　standard　(1000　ppm)　situations　of　CO2　concentration　revealed　poor　ventilation　in　houses　of　Group　A,　which　could　increase　the　risk　of　children＇s　asthma　and　respiratory　infections.　Indoor　carbonyls　and　VOCs　levels　in　almost　all　the　homes　did　not　exceed　the　guideline.　However,　the　integrated　influence　of　these　compounds　should　be　noted　for　possible　adverse　health　effects,　especially　in　child＇s　bedroom　where　children　spent　more　time.　Dibutyl　phthalate　(DBP)　and　Di　(2-ethylhexyl)　phthalate　(DEHP)　were　most　frequently　detected　SVOCs　in　house　dust.　In　summer,　the　average　child＇s　daily　intake　of　phthalates　from　house　dust　in　homes　of　Group　A　was　significantly　higher　(p　＜　0.01)　than　that　of　Group　B.　Cladosporium　spp.,　Penicillium　spp.　and　Aspergillus　spp.　accounted　for　about　90%　of　indoor　airborne　fungi.　Airborne　fungal　levels　in　about　70%　of　measured　rooms　exceeded　1000　cfu/m(3)　in　summer.　The　high　correlation　between　airborne　fungi　and　PM　was　found,　consequently,　children＇s　health　could　be　affected　by　the　combined　action　of　airborne　fungi　and　PM.　These　results　were　helpful　to　evaluate　and　design　healthy　housing　environment　for　schoolchildren.　(C)　2016　Elsevier　Ltd.　All　rights　reserved.