In order to save time and calculate true response of gas pipeline buried in geological fault in an even better fashion, conducted respectively is analysis on different responses of buried gas pipeline under the action of normal fault and reverse fault according to the established mechanical models, adopted are the nonlinear fitting and linear fitting method to conduct dimensionless correction on such parameters as pipe diameters, wall thicknesses, pipe material features, crossing angles, soil cohesion and internal pressure of the pipeline and proposed is the simplified formula suitable for calculating the maximal strain value of the pipeline in engineering design with consideration of plastic strain concentration and buckling of the pipeline. Conducted is comparative analysis on different calculation methods through a case study and the calculation results show that the simplified formula is reasonable.