To effectively enhance the engineering properties of loess, the soil was modified by incorporating varying amounts of a superhydrophobic material, CN. A series of experiments, including unconfined compressive strength tests , soil-water contact angle measurements, and water droplet infiltration tests, were conducted. Microstructural analysis was performed using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results demonstrate that the addition of CN significantly improved both the mechanical and hydrophobic properties of the loess. Specifically, with a 2% CN incorporation, the unconfined compressive strength of the loess increased from 0.64 MPa to 1.06 MPa. However, the rate of strength enhancement initially increased and then decreased with further increases in CN content. After the addition of CN, the loess exhibited no peeling after being immersed in static water for 7 days, indicating a significant improvement in its resistance to disintegration and water stability. The incorporation of CN reduced the surface free energy of the loess, increased the soil-water contact angle. With an 8% CN addition, the fractal dimension of the pore unit morphology distribution decreased from 3.118 to 1.930, reflecting a reduction in the number and complexity of pores, which resulted in a more compact and stable internal structure. The superhydrophobic material CN can effectively enhance the mechanical properties and water stability of loess. This study provides a theoretical foundation for the practical application of modified loess.