Abstract: According to pipeline design codes and the theory in pipeline strength, stability and optimization, a long-distance oil/gas pipeline strength and optimization design software(PIPSOD) is developed. The software can perform pipeline's conventional design, aseismic design, crossing design, stability analysis, anchor block design and tunnel pipeline optimized design. Taking thrust calculation for tunnel pipe anchor in West-to-East Gas Transmission Pipeline Project as an example, calculation results between PIPSOD software and commercial finite element software are compared, with maximum relative error of 4. 2%, which demonstrates it reliability. It meets the requirement of strength and optimized design of oil/gas pipelines.