Abstract: Aiming at the safety problems of pipelines with corrosion defects caused by ground load occupation, a three-dimensional foundation-pipe-load finite element model was developed by means of ABAQUS software. The stress and deformation of buried pipeline subjected to ground load and corrosion defect were investigated. And the effects of pipeline burial depth, pipeline internal pressure, ground load and corrosion defect location on the mechanical properties of buried pipeline were studied. It is indicated that with the increase of pipeline burial depth, the stress distribution on the pipeline can be effectively alleviated, but the amount of excavation works will be increased. When the internal pressure of buried pipeline reaches a certain value, the maximum stress of the pipeline with corrosion defect is mainly dominated by the internal pressure and less affected by the ground load. The effect of pipe-soil tangential friction coefficient on the mechanical properties of buried pipeline is significant. The pipeline stress increases linearly with the increase of the pipe-soil tangential friction coefficient. And the stress of the buried pipeline with corrosion defect is maximum when its corrosion defect is located in the direction of a quarter past five to the pipeline section.