A reconstruction system of three-dimensional topography by parallax measurement of stereoscopic scanning electron microscopy has been developed. A digital elevation of the fracture surface was calculated from the relative displacement between corresponding positions using an area-based matching algorithm, and then digital elevation models of the three-dimensional topography were reconstructed on the monitor of a personal computer.The system was applied to the ductile fracture surfaces of duplex stainless steel. The reconstructed images obviously revealed an elongated dimple fracture originating from inclusions and cleavage cracks arrested by austenite grain. The reconstruction of the cleavage fracture surface of type 444 ferritic stainless steel was also made, and the elevation of cleavage steps of the river pattern was detected.