The utility model belongs to facility agricultural greenhouse environmental control apparatus field, in particular to calandria phase transition heat -retaining heat radiation device for greenhouse. The device adopts with greenhouse environment characteristic and crop demand assorted, has different phase transition temperature's inferior normal -low temperature phase change material to use its combination, realized thermal abundant collection more than needed on daytime in the greenhouse, storage, need night thermal gradient to supply with, solved that the after midnight of system is exothermic to lack of staying power or exothermic delay time overlength scheduling problem, can better reply adverse weather condition, thus guarantee the crop growth environment that suits in the greenhouse.