The invention provides a high efficiency oil displacement cleaning fluid suitable for use in an oil-based drilling fluid environment. The high efficiency oil displacement cleaning fluid comprises thefollowing components by mass: 500 parts of water, 40-70 parts of a surfactant, 35-55 parts of a co-solvent, 2.0-3.0 parts of a separant, and 0-1000 parts of a weighting agent. The surfactant is formedby mixing of two or three of a non-ionic surfactant polysorbate, coconut oil diethanolamide and an anionic surfactant sodium dodecylbenzene sulfonate, and has a density of 1.00g/cm<3>-1.90g/cm<3>. The oil displacement cleaning fluid provided by the invention has good oil-based filter cake cleaning ability, has good compatibility with oil-based drilling fluid and cement slurry, can effectively remove oil-based filter cake on a well wall and casing wall, and improve the displacement efficiency in the cement injection process, thus improving the well cementation quality, and is a high-quality oil displacement cleaning fluid suitable for cement injection operation under an oil-based drilling fluid condition.