Using　phase　change　material　(PCM)　in　the　north　wall　of　solar　greenhouses　has　been　recommended　as　an　efficient　solution　for　promoting　their　indoor　thermal　environment.　In　this　type　of　walls,　however,　there　is　always　a　thermal-stable　layer,　which　would　greatly　decrease　their　heat　storage　capacity.　To　solve　this　problem,　an　active　passive　ventilation　wall　with　PCM　has　been　developed　in　this　study,　and　a　comparative　study　was　carried　out　using　both　experimental　and　numerical　methods　to　justify　its　advantages　over　conventional　walls.　Several　important　parameters　have　been　monitored　or　calculated　to　reflect　the　contribution　of　the　newly　proposed　method　to　the　performance　of　the　middle　layer　of　the　wall,　the　indoor　thermal　environment　and　the　plants＇　growth.　The　obtained　results　confirmed　the　great　effectiveness　of　the　proposed　wall　in　promoting　the　temperature　of　its　middle　layer　and　irradiated　surface.　In　the　newly　proposed　wall,　there　was　no　thermal-stable　layer　observed,　resulting　in　a　minimum　temperature　rise　of　1.34　degrees　C.　The　proposed　solution　also　enhanced　the　wall＇s　heat　storage　capacity　by　35.27-47.89%　and　the　heat　release　capacity　by　49.93-60.21%,　resulting　in　an　average　increase　of　indoor　air　temperature,　daily　effective　accumulative　temperature　and　soil　temperature　by　1.58-4.16　degrees　C,　33.33-55.06%　and　0.53-1.09　degrees　C,　respectively.　The　plant　height,　stem　diameter　and　fruit　yield　have　been　increased　by　30%,　25%　and　28%,　respectively.