The　green　foaming　agent　was　prepared　by　water　extraction　method　with　natural　plant　tissue　camellia　meal　as　raw　material,　and　the　foam　concrete　was　prepared　by　physical　foaming　method.　The　effects　of　mixing　time,　water-binder　ratio　and　foam　content　on　the　dry　density,　compressive　strength　and　pore　structure　of　foam　concrete　were　investigated.　The　results　show　that　the　green　foaming　agent　has　high　foam　stability　and　can　be　used　to　prepare　low-density　foam　concrete,　so　it　is　a　high-quality　new　green　foaming　agent.　When　the　foam　content　is　750　mL,　the　mixing　time　is　180　s,　and　the　water-binder　ratio　is　0.　45,　the　water　absorption　of　the　prepared　A05　density　grade　foam　concrete　is　45%,　and　the　compressive　strength　is　1.　52　MPa.　The　foam　concrete　prepared　by　green　foaming　agent　has　uniform　pore　size　distribution,　small　pore　size　(maximum　pore　size　dmax　＜　0.　6　mm),　and　complete　pore　morphology.　©　2023　Bulletin　of　the　Chinese　Ceramic　Society.　All　rights　reserved.