Cementing engineering design simulation software has been widely used in deep well, HTHP well and extended reach well for cementing design, calculation and analysis. Offering advanced features of high accuracy of ECD calculation, low mean error of BHCT prediction and reasonable prognosis of displacement efficiency, the software provides a reliable calculation support for the implement of narrow window pressure cementing, cement slurry design and cementing quality prediction. The software has been not only widely domestically applicable for cementing software services, including Shell, Four-Seas and Xinjiang, but recognized by Indonesia, Iraq and other overseas cementing operation for professionalism.