Abstract: Steel fiber reinforced lightweight aggregate concrete has the virtues of both the steel fiber reinforced concrete and lightweight aggregate(haydite ) concrete, and makes up the deficiencies of common concrete such as low tensile strength and large sel-f weight. By studying the fundamental mechanical properties of the new concrete material, the influence on steel fiber reinforced lightweight aggregate concrete caused by the change of volume ratio of steel fiber was analyzed. The experimental results indicated that after using lightweight aggregate concrete and adding steel fiber, the performance of intensity and deformation of the concrete is greatly improved.