The characteristics of fractals are fractal dimension. In this paper, the Dubuc algorithm is used to calculate the fractal dimension of seismic waves. A conclusion is reached: the seismic wave is fractal. To sum up, the fractal theory recent achievement of nonlinear sciences is introduced to the field of civil engineering. In this paper, the characteristic of seismic wave is studied preliminarily from new point and results have been achieved at the intersect of multiple sciences, which are of great signific...