The authors have discussed the formation

distribution and properties of hydrochemical anomalies constituted by the concentrations of benzene

me-htyl-benzene

phenol and dissolved hydrocarbon gases in surface water of Nong-an structure

Jilin Province

and the obsorption intensity of the same sur-face water determined by ultraviolet spectrum(260

310nm)and fluorescence spectrum(450nm)

in order to guide oil and gas prospecting in the adjacent area.