Abstract: Intergrated geochemical exploration of oil/gas, including hydrochemical and △C methods, was carried out in Shuanghe Oil Field. Hydrochemical anomaly pattern and the △C anomaly pattern were established. The hydroche-mical measurement consists of the concentrations of methane, benzene, and phenol, Ultraviolet absorption spectrum, and fluorescence spectrum. Thus, the oil/gas exploration of Miyang Oil Field is under the guidance of the hydrochemical anomaly pattern of Shuanghe Oil Field, and judged by the carbon isotopic composition of some of the samples, the hydro-chemical anomalies in Miyang Depression were evaluated, and favourable prospecting areas and sections for oil/gas exploration were proposed.