Abstract: A residual strength evaluation software developed according to the standard SY/T 6477-2014 for oil and gas pipelines with volume defect is introduced and the residual strength of a uniformly corroded pipeline with the defect taken as an example is evaluated by the software.The core calculation module of the software is composed of a uniform corrosion defect evaluation module and a local corrosion defect evaluation module.The following work can be done with the software:logical judgment of the defect types and how to take its quantification, calculation of the length of the uniform thickness, calculation of the maximum allowable working pressure;calculation of the allowable residual strength factors and calculation of the maximum allowable working pressure after the pipeline decompression.The software is of such advantages as accurate result, easy operation and fast response.