In order to explore the effect of combined application of zinc，boron and molybdenum on the flowering and leaf nutrients of jasmine (Jasminum sambac)，2 years old potted jasmine was used as the test material，and the three-factor and three-level orthogonal design was used to spray zinc，boron and molybdenum fertilizers on the leaf surface three times after pruning.The number of jasmine flowers were measured at 30 days after pruning.The flower diameter and leaf nutrients were measured at 35 days after pruning.The results showed that:(1)with the increase of spraying concentration，the content of corresponding trace elements in leaves increased.The appropriate concentration of trace elements can promote the flowering and nutrient absorption of jasmine，but molybdenum has been toxic.(2)When 0.50% zinc，0.20% boron and 0% molybdenum were applied together，the flower number and flower diameter were the largest.The effect on flower number was molybdenum>zinc>boron，and the effect on flower diameter was boron>molybdenum>zinc.(3)Spraying zinc fertilizer was the main factor affecting the content of zinc and chlorophyll in leaves；Spraying boron fertilizer was the main factor affecting the content of boron and total phosphorus in leaves；Spraying molybdenum fertilizer was the main factor affecting the content of molybdenum，total nitrogen and total potassium in leaves.In conclusion，0.50% zinc and 0.20% boron can promote the flowering and leaf nutrient absorption of jasmine.This study provides technical guidance for balanced fertilization of jasmine.