Abstract: In the exploration and development of oil & gas, the requirement for the automation and light-weight of the corollary equipment in the offshore drilling and production device becomes more and more strict; equipment lightening has become one of the major developing trends. This paper compares the advantages and disadvantages of the new type of mud pump assembly (FB1600) and the traditional mud pump assembly (F-1600), especially focuses on the optimization effect of the power driving mode. FB1600, with simple and reliable drive mode, can meet the requirement of lightweight design and manufacturing. Its suitability to different environment makes it easily equipped with the offshore drilling platforms and land rigs and satisfy the formidable offshore environment.