The research aims to study the effect of soil content of gypsum on the Engineering Characteristics and the usability of compression. The effect of increasing the proportion of gypsum in the soil on the Atrberg limits values was studied, and found that an increase in the proportion of gypsum in the soil reduces the Plasticity. The effect of the gypsum content on the Swelling Capability for soil was studied and found that the swelling ability reduces with increasing the proportion of gypsum and the swelling pressure value also decreases with increasing the soil content of gypsum. It was studied The effect of mixing gypsum soil - cement on the usability of compression, and found that the addition of cement to the soil reduces the usability of compression.