Selecting the approved products of steel fiber,made by the thin-plate shearing method,the standard prismatic specimen were cast by horizontal and vertical modes to study the distribution states of steel fiber and the flexural-tensile strength of steel fiber reinforced concrete.It is proved by the slice tests of specimen that the steel fiber tends to distribute perpendicular to the cast direction.There are obviously effects of the cement content,the length of steel fiber and the fraction of fiber by volume on the distribution states of steel fiber in concrete.It is also proved by the flexural-tensile tests that the enhancement of steel fiber on the flexural-tensile strength of concrete cast by horizontal mode is larger than that of concrete cast by vertical mode.The research results can be used as reference to revise the standard of test methods of steel fiber reinforced concrete.