Because of the high limit and crack moment value,large pipe piles are widely used in foundation engineering.In offshore engineering,the fatigue performance of large pipe piles must be considered because of the horizontal dynamic load of the pile foundation subjected to long-term wave,current or ship impact.The anti-cracking performance of D1200B32-2 pipe piles is studied by the bending test under cyclic load.The fatigue damage of the test samples is obtained and the fatigue limit bending moment is predicted by lgS-lgN curve.It provides some reference for the design of fatigue strength of large pipe piles.