The invention discloses a steel fiber reinforced concrete magnetic orientation method. Coarse and fine aggregates in steel fiber reinforced concrete are replaced by ferromagnetic aggregates such as steel slag, the steel fibers and the ferromagnetic aggregates in steel fiber reinforced concrete have ferromagnetic characteristics, and under an applied magnetic field, the ferromagnetic aggregate and steel fibers produce movement so that steel fiber positions and directions are controlled. Through adjustment of the magnetic field magnitude and direction to control steel fiber movement, the steel fiber rotates and is arranged along a certain direction and thus single-direction tensile strength of the steel fiber reinforced concrete is improved. The ferromagnetic aggregates solve the problem that the common aggregate limits steel fiber rotation and movement.