Abstract: The paper, based on a theoretical an alysis of the scismic stress computatlon formulas for buried pipelines of various countries, introduces some reasonable formulag. The author has hed them tested by pplying them to Qing Huang Dao-Beijing pipeline in Tang Shan earthquake, ezplaining the considerable deviations made by other formulas.hether the formulas presented here in the paper really hold water need be futher justified by more earthquake damage cases. But they are of solid ground tieoretically, ihe result thus obtained being in oonformity with the actual situation happened in Tangshan earthquake.