Abstract: Nowadays in China the construction of infrastructure has been expedited. The methodologies to prevent destruction caused by expansive soil have been put in the frontier. Expansive soil is a kind of special regional clay which can be found in many places of China. Geological disasters caused by expansive soil happened in a more and more frequent trend. With the intention to bolster the resources recycling,and meanwhile alleviate the damages to be incurred by the expansive soil,a string of explorations has been undertaken in this paper. In the present study,a uniaxial compressive strength soil test is conducted. It studies the impact of wasted tire rubber powder content and water content for the mixture uniaxial compressive strength. The test results indicate the characteristics of the improved expensive soil shear strength. They confirm the assumption that wasted tire rubber powder can improve the expansive soil greatly. This finding opens up a new improving method to reduce the engineering disaster caused by expensive soil．