The invention belongs to the technical field of oil and gas well engineering, and particularly relates to an efficient filter cake cleaning liquid and a preparation method thereof, and the efficient filter cake cleaning liquid can be used for cleaning drilling fluid filter cake and can increase well cementation two interface cementing strength. The technical scheme of the filter cake cleaning liquid is as follows: the filter cake cleaning liquid comprises the following components: base oil, an aqueous solution, 4.15%-6.25% by mass of a surface active agent, 6%-8% by mass of an emulsifier, and 3%-4% by mass of a wetting agent; wherein the base oil uses white oil as a filter cake cleaning fluid continuous phase, a dispersing phase is the aqueous solution, and the volume ratio of oil to water is 7:3-8:2. The technical scheme adopts a base oil / surface active agent system to clean the filter cake to achieve the purpose of improve the well cementation two interface cementing strength and remove blocking.