以粘度法测定了高分子型表面活性剂聚乙二醇（ＰＥＧ）在ＺｒＯ２前驱体表面上的吸附量和水洗后的残留量结合粉体改性效果和ＩＲ、ＸＰＳ技术对前驱体表面－ＯＨ、ＰＲＧ在加热过程中分解脱除情况的测定结果，分析了ＰＥＧ大分子在前驱体表面上的吸附状态及其对前驱体表面性能的影响，有助于了解ＰＥＧ大分子对湿化学法制备超细ＺｒＯ２陶瓷粉体的改性作用，为进一步优化表面改性工艺条件提供实验依据． Viscosity method was used to determine the adsorption amount of polyethylene glycol (PEG) on the surface of ZrO2 precursor and the residual amount after washing with water. The modification effect of the powder and IR, XPS technology on the surface of precursor-OH , PRG in the heating process of decomposition of the determination of the results of the analysis of the PEG macromolecule adsorption state on the precursor surface and its precursor surface properties help to understand the PEG macromolecules prepared by wet chemical method Fine ZrO2 ceramic powder modification, to provide experimental basis for further optimization of surface modification process conditions.