Abstract: The expansive soil is one of the problematic soils in the geotechnical engineering since it is a high plasticity soil and the volume will be contracted when the moisture in the soil is lost, whereas, when it absorbs the moisture, the volume of the expansive soil will increase. China is the largest country with the widest expansive soil distributions. There are 300 million populations who live within the expansive soil terrains and the expansive soil induced geohazards are frequently encountered. Under the natural moisture content state, the color of the expansive soils are usually gray black, yellowish brown or gray. Under this state, the compressive strength of the expansive soils are usually high. When they absorb water, their color turns into yellow, gray black with shinny luster. If a lowraised residential building is constructed on the expansive soils without treatment, the adverse consequence is most like to occur. This paper presents the distribution and evaluation results of expansive soils in Wulian County, Shandong Province.   \=

Key words: Expansive Soil, Swelling Shrinkage, Heaving Hazards, Modified Expansive Soils