Method for preparing large-scale ITO green body

The invention provides a method for preparing a large-scale ITO green body. The method comprises the steps of firstly, vacuumizing the cavity of a microporous combined mold by use of a vacuum pump, adding an organic defoamer to an ITO slurry to prevent bubbles generated or bubbled rolled in, thereby preventing the needle hole defect of the ITO green body due to the bubbles, taking compressed air as a pressure medium, and controlling to press the ITO slurry into the cavity of the mold via a pipeline by use of an automatic pressurization program, wherein in the process, water in the ITO slurry is discharged out of the cavity by use of a bisphenol A type microporous epoxy resin or voids in a gypsum mold, while powder in the ITO slurry is formed into a dehydrated filter cake and continuously accumulated inwards from the inner wall of the mold; the ITO slurry entering subsequently is discharged out of the cavity orderly via voids in the filter cake and the mold, until a solid ITO green body is formed; as a result, the solid-liquid separation of the ITO slurry is realized, the needle hole defect of the ITO green body is eliminated, and the degree of automation is high; the ITO green body is high in density, high in strength, large in scale, and can be formed with a net size.