Silicone modified acrylic latex has excellent anti-weathering ability. This paper discusses the preparation of silicone modified acrylic non-aqueous dispersion based on silicone modified acrylic latex. The anti-weathering ability of this kind of material was examined, and showed good results. The consolidation effect is good when used to consolidate earthen loess samples and earthen archaeological sites. The conclusion shows that non-aqueous dispersion modified by silicone is suitable to consolidate earthen archaeological sites and monuments. -- ICCROM