Through three point bending tests, the ultimate load, fracture toughness, fracture energy and crack tip opening displacement（CTOD）of aligned steel fiber reinforced concrete（ASFRC） were determined and compared with those of randomly distributed steel fiber reinforced concrete（SFRC）. The results show that, compared with SFRC, the ultimate load, fracture toughness, fracture energy and CTOD of ASFRC are improved significantly. The ASFRC exhibits obvious advantages in fracture properties relative to SFRC. In ASFRC, the number of fibers bridging the two sides of cracks and the effective reinforcement of the matrix are much more than that in SFRC, which leads to the improvement in fracture property of ASFRC.