Using FLAC, the macroscopically mechanical behavior, curved shear bands and progressive shear failure of yield mine pillar with rough ends are modeled. In elastic stage, constitutive relation for ore is linear elasticity. The failure criterion is a composite Mohr-Coulomb criterion with tension cut-off. Beyond the peak stress, the linear strain-softening constitutive relation is adopted. For wider pillar, the strength is higher. The failure of the pillar is progressive. Shear bands are initiated at the corners of the pillar and then propagate into the pillar. Finally, the shear fracture network is formed. The shear fractures are similar to the curved slip lines in plastic theory. The compressive stress, acting on the strain-softening zone outside the central elastic zone of the pillar, increases in a fluctuation fashion toward the center of the pillar from the two lateral edges. The ratio of the thickness of strain-softening zone to the timestep (or axial strain) remains a constant. The stress level in elastic zone and the stress distribution in strain-softening zone are not affected by the pillar thickness. The former is related to the axial strain of the pillar.