At　present,　the　wall　structures　of　a　Chinese　solar　greenhouse　puts　more　emphasis　upon　wall　thermal　insulation　than　on　heat　storage　of　the　wall,　such　as,　brick　wall　/　air　layer　/　brick　wall　(indoor),　brick　wall　/　polystyrene　board　/　brick　wall　(indoor),　rammed　earth　wall　/　brick　wall　(indoor),　and　so　on.　In　order　to　solve　the　problems　which　existed　in　the　thermal　performance　design　method　of　the　wall　structure　in　a　solar　greenhouse,　the　construction　method　of　a　three-layer　wall　with　phase-change　thermal　storage,　that　is,　the　inner　wall　built　with　the　phase　change　material　(PCM)　wallboard,　the　outer　insulating　layer　built　with　polystyrene　board　and　the　middle　layer　built　with　block　bricks,　was　proposed　in　this　paper.　To　quantitatively　evaluate　the　heat　transfer　performances　and　heat　storage/release　characteristics　of　the　three-layer　wall,　an　experimental　device　used　for　the　heat　performance　of　the　three-layer　wall　was　constructed　at　a　vegetable　planting　base　located　in　Beijing.　Combined　with　the　experimental　results,　the　analysis　method　of　heat　transfer　performances　of　solar　greenhouse　wall　and　its　evaluation　indexes　were　put　forward.　The　analysis　results　showed　that:　1)　The　three-layer　wall　had　better　heat　storage/release　performance　than　the　traditional　brick　wall　of　the　reference　greenhouse.　The　PCM　wallboard　can　significantly　improve　the　utilization　rate　of　solar　energy　and　increase　the　indoor　air　temperature.　The　effective　heat　storage　capacity　of　the　three-layer　wall　was　increased　by　26.6%　more　than　the　north　wall　of　the　reference　greenhouse　in　which　the　daily　accumulation　of　solar　radiation　was　9.32　MJ/m2.　At　night,　the　cumulative　heating　capacity　of　the　three-layer　wall　was　increased　by　16.2%　over　the　capacity　of　the　brick　wall　of　the　reference　greenhouse　during　the　time　when　the　heat　preservation　quilt　was　closed.　Moreover,　the　effective　heat　storage　capacity　of　the　per　unit　volume　PCM　wallboard　was　80.0　MJ/m3　and　it　was　about　10　times　that　of　the　block　brick　in　the　middle　layer　of　the　three-layer　wall.　2)　The　depth　of　the　solar　greenhouse　north　wall　that　the　temperature　variation　caused　by　the　solar　transmitted　radiation　through　the　front　sloping　roof　surface　could　affect　was　limited,　and　the　depth　accounted　for　about　33.3%　of　the　0.90　m-thick　three-layer　wall.　Furthermore,　there　was　the　temperature　stable　zone　in　the　three-layer　wall　and　its　thickness　accounted　for　about　61.1%　of　the　0.90　m-thick　three-layer　wall.　Obviously,　the　method　that　only　increased　the　three-layer　wall　thickness　to　improve　the　sensible　heat　storage　efficiency　was　very　limited.　These　results　can　provide　references　for　the　construction　method　of　the　solar　greenhouse　wall,　the　application　of　phase-change　thermal　storage　technology,　and　the　analysis　of　the　phase　change　heat　transfer　problem　in　a　solar　greenhouse.