We investigate discrete-time coined quantum walks on the Sierpinski gasket and the Sierpinski tetrahedron which have non-integer dimensions, by concentrating on the probability distribution, return probability and standard deviation. We compare the calculating results with classical random walks on the two fractal structures and quantum walks on the corresponding regular triangle grids. For the quantum walks, we adopt DFT coin and Grover coin, respectively, which exhibit great differences on the above quantities.