The invention relates to a precise lifting method for a plant equipment foundation. The precise lifting method comprises the following steps that S1, curtain walls are formed, specifically, holes arevertically and downwards drilled in two sides, needing to be lifted, of the equipment to form curtain holes, and the curtain holes are grouted to form two curtain walls which are parallel to each other; S2, a reinforcing body is formed, specifically, obliquely-downward grouting holes are formed in the outer contour lines of the equipment in the length direction of the curtain walls, grouting is conducted in the grouting holes, grouting is conducted between the two curtain walls at the bottom of the equipment foundation bottom plate to form the reinforcing body attached to the lower surface ofthe bottom plate, and the reinforcing body and the two curtain walls are combined to form an n-shaped structure; and S3, lifting is conducted, specifically, the grouting hole serves as the lifting hole, a hole is obliquely drilled downwards until the hole is drilled to the position below the reinforcing body and located between the two curtain walls, pressure grouting is conducted on the bottom ofthe lifting hole to fill and reinforce the surrounding backfill layer, pressure grouting continues, retreating type grouting is adopted, and the equipment is lifted to the set lifting height. The precise lifting method has the advantages of being small in surrounding disturbance, controllable in lifting height and high in lifting precision.