The present invention discloses a preservative device comprising a main body casing, an air inlet, an air outlet, an ultraviolet lamp, and a fan. One end of the main body casing is provided with the air inlet, and the other end of the main body casing is provided with the air outlet. The fan is disposed at a position corresponding to the air inlet of the main body casing, and the ultraviolet lamp is disposed in the inner cavity of the main body casing.本創作公開一種保鮮器，包括主體機殼、入風口、出風口、紫外線燈、及風機。主體機殼的一端設置有所述入風口，主體機殼的另一端設置有所述出風口。風機設置於主體機殼對應於入風口的位置，紫外線燈設置於主體機殼的內腔中。
