Abstract: In order to investigate the fracture behavior of steel fiber reinforced concrete materials at low temperatures, 3D numerical models of concrete specimens with different volume fractions of steel fibers (V=0.0%, 0.5% and 1.0%) were developed at the meso-scale by means of finite element analysis, and splitting tensile strength tests as well as three-point bending loading tests were conducted at three temperatures (T=20 ℃, −40 ℃ and −80 ℃). The corresponding damage modes and load-span deflection curves were obtained. The results show that the fracture energy of concrete tends to increase with the decrease of temperature, and the fracture energy increases with the increase of fiber volume fraction. The characteristic length of concrete decreases with decreasing temperature, but the addition of fibers largely increases its characteristic length.