Abstract: The problem of strong water sensitivity of loess is a difficult point for ecological restoration in the loess regions. In this study, a dual polymer material was selected, and a disintegration test, a variable water head penetration test, a soil water characteristic curve test, and a plant growth physiological index test were conducted. The effect of polymer materials on the water holding capacity and the ecological effects of the engineering properties of reshaped loess, combined with micro-tests such as XRD, mercury intrusion, and SEM, were comprehensively analyzed, and its reinforcement mechanism from the aspects of composition, pore distribution and particle structure was examined.The results show that the addition of polymer mixtures can effectively improve the disintegration resistance of the soil samples, and the disintegration coefficient increases with the increase of the materials. The polymer mixtures can effectively enhance the water retention properties of the material. The coefficientof permeability is reduced and the soil-water characteristic curve is shifted upwards. The addition of polymer mixturess can effectively increase plant growth and drought resistance. The root-shoot ratio is larger, the root length is longer, and the SOD value is more affected by drought. The addition of double-poly material does not produce new substances. Its role is mainly to enhance the interparticle bonding, generate a large number of cohesive bodies, and the pore distribution is transformed from medium pores to large pores and minute pores. The dimerized material is enriched with a large number of polar active group amide groups (—CONH2) to adsorb and bridge the soil particles, and the Hydroxyl (—OH) and carboxyl (—COOH) adhere to the surface to form a protective film. The layers of agglomerates are wrapped to promote soil stabilization.