A kind of sapling planter,Comprising a first shell,One second shell,One elastic device and an interior main body； First shell has one first press section and one first sandwich part； Second shell has one second press section and one second sandwich part； Elastic device is arranged between the first press section of what and the second press section； Interior main body is cylindrical in shape,It is arranged between what first shell and second shell,It has one of opposite first end and a second end； At elastic device when what release conditions,First press section is separated from each other with the second press section,First sandwich part and the second sandwich part are close to each other,Make second end in a closed state； At elastic device when what compressive state,First press section and the second press section are close to each other,First sandwich part is separated from each other with the second sandwich part,Make second end in an open state.一種植苗器，包含一第一殼體、一第二殼體、一彈性裝置及一內主體；第一殼體具有一第一按壓部與一第一夾合部；第二殼體具有一第二按壓部與一第二夾合部；彈性裝置設置於第一按壓部與第二按壓部之間；內主體呈筒狀，設置於第一殼體與第二殼體之間，其具有相對之一第一端及一第二端；當彈性裝置處於釋放狀態時，第一按壓部與第二按壓部相互分離，第一夾合部與第二夾合部相互靠近，使第二端呈一封閉狀態；當彈性裝置處於壓縮狀態時，第一按壓部與第二按壓部相互靠近，第一夾合部與第二夾合部相互分離，使第二端呈一開放狀態。
