Because of the impeded traffic during the winter, roads are treated with various spreading materials. Among the most common ones is the industrial salt. The aim of this study was to determine the impact of the industrial salt, its use on the Sljeme road, which is a part of the protected area of the Park of nature, and its effect on the content of anions (F-, Cl-, NO2 -, NO3 -, Br-, SO4 2-, PO4 3-) and cations (Li+, Na+, K+, NH4 +, Ca2+, Mg2+) in the soil. A special emphasis was placed on the variability of the content of sodium and chloride in the soil, since these ions make up the highest percentage contained in the industrial salt. Soil sampling was conducted on 18 locations after the snow melted, from 11 March 2015 onwards, at different points along the road and, for the comparison and the control points, the ground which is located 30 meters from the road and always at a higher alititude. A total of 36 soil samples were collected. Anions and cations were detected by an aqueous extract of the soil in a ratio of 1:10 by ion chromatography. The results indicate that the road treatment by industry salt influenced the significant accumulation of chloride content (Cl-) and sodium (Na+) in the soil by the road compared to the control samples, as well as reducing the content of magnesium (Mg2+) in the road soil samples compared to the ones taken at checkpoints. The reason is the increased accumulation of sodium in the soil that displaces magnesium ions from the said soil. Everything leads to the conclusion that the changes in the ground along the road are a consequence of human-caused impact.