Based on the transmission line theory of the buried metallic structures,the concerned harmful effects to the buried oil and natural gas pipelines caused by the power line short-circuit fault are further discussed.A closed-form expression of the induced voltage caused by the short-circuit fault of the ultra-high voltage power(UHVAC) transmission line is given.The transmission line model of the buried pipeline is set up and a set of formulas for calculating induced voltage on the pipeline and the parameters of the buried pipeline in actual environment condition are given.At last,the characteristic of the harmful effects on the buried pipeline from the power line short-circuit fault are discussed. Based on the transmission line theory of the buried metallic structures, the concerned harmful effects to the buried oil and natural gas pipelines caused by the power line short-circuit fault are further discussed. A closed-form expression of the induced voltage caused by the short -circuit fault of the ultra-high voltage power (UHVAC) transmission line is given. The transmission line model of the buried pipeline is set up and a set of formulas for calculating induced voltage on the pipeline and the parameters of the buried pipeline in actual environment condition are given. At last, the characteristic of the harmful effects on the buried pipeline from the power line short-circuit fault are discussed.