The utility model provides a plant preservation box which comprises a base and a transparent jacket fastened with the base, wherein air vents are arranged at the upper end face of the jacket; a fixing plate is arranged on the base; a plurality of through holes are arranged on the fixing plate; an upright column is vertically fixed on the base; a supporting claw is sheathed on the upright column; and the air vents are branch-shaped. The plant preservation box is mainly used for planting landscape plants; the plants are planted in the through holes of the fixing plate; as the transparent jacket provided with the air vents is adopted, the plants can be directly watched through the jacket; the plant preservation box serves as artware and has an appreciation value; the plant preservation box has a warm shed-like effect; the growing period of the plants can be effectively extended; and the plants can be preserved for a long time.