Abstract: The aromatic constituents in the fresh leaves of Fuyun 6tea(Camelliasinensis cv.Fuyun6)were found to increase significantly under varying degrees of Polyphagotarsonemus latus stress.There were 66 aromatic compounds in the leaves when the tea plants were under a medium stress.As the stress leve lincreased,46 new volatile substances were identified,as compared to control.17 aromatics,such ascedrol,methylsalicylate and 2-Hexyl-1-octanol,were detectedonly when the plants were subjected to a light stress.Some others,such as geranylgeraniol,D-limonene and styrene,existed only in the samples under a medium stress.A severe stress could cause the generation of 10 aromatics,such as copaene.All levels of stress tested in this study produced 6aromatic constituents including hexanal.