"Light conversion film" is a greenhouse film made by adding "light conversion functional masterbatch" to the raw materials for the production of ordinary greenhouse film. When the sunlight passes through the "light conversion film", the ultraviolet (which will burn plant tissue) and green light (which will be lost by plant reflection) in the sunlight are absorbed and converted by the "light conversion masterbatch" in the film, releasing blue and red light beneficial to plant growth, The application results show that the greenhouse covered with "light conversion film" has the advantages of fast crop growth, good fruit setting, many fruits, strong stress resistance, early maturity, high yield and good quality