Abstract: By taking Cymbidium huxueense as the research object, randomized block experiment was used, the change of the photosynthetic physiological characteristics of Cymbidium huxueense by fertilized with 3 different foliar fertilizers (Potassium Dihydrogen Phosphate, Biogen and Cuijun B-2) were studied. The results showed that when the concentration of Cuijun B-2 was 500 times, photosynthetic physiology, net photosynthetic rate, stomatal conductance and transpiration rate of Cymbidium huxueense were higher, while the intercellular CO2 concentration was lower, which was beneficial to exuberant growth.