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Wrinkling behavior of buried pressure pipeline under strike-slip fault movement was investigated by finite element method. Effects of fault displacement, internal pressure, diameter-thick ratio and dip angle on the wrinkling modes and longitudinal strain of pipeline were discussed. The results show that there are two wrinkling locations of buried pipeline under fault displacement. There is only one wrinkle on A part, but more than two wrinkles on B part. Buckling mode of buried steel pipeline presents three states under different internal pressures. They are collapse state, critical state between collapse and wrinkling, and wrinkling state. The greater diameter-thick ratio can enhance the ability to resistance to bending moment. The bending curve of pipeline changes from S-shape to Z-shape with the increasing of diameter-thick ratio. Wrinkling is more serious with the increasing of fault displacement and diameter-thick ratio. There are two wrinkling modes of B part pipeline when dip angle ß = 0°~45°. [ABSTRACT FROM AUTHOR]