Using　a　self-made　shrinkage-restrained　ring　device　with　a　clapboard,　the　effect　of　steel　fiber　content,　sand-binder　ratio　and　water-binder　ratio　on　the　cracking　resistant　behavior　of　reactive　powder　concrete　(RPC)　was　investigated　by　an　orthogonal　experiment.　The　study　results　reveal　that　steel　fiber　content　has　the　most　significant　effect　on　the　cracking　resistant　behavior　of　RPC,　while　for　either　sand-binder　ratio　or　water-binder　ratio　this　effect　is　not　obvious.　With　the　increase　of　the　steel　fiber　content,　the　cracking　resistant　behavior　of　RPC　improves.　The　cracking　resistant　behavior　of　RPC　reaches　the　optimum　when　steel　fiber　content　is　3%　by　volume　of　RPC.　However,　the　cracking　resistant　behavior　of　RPC　declines　slightly　when　the　steel　fiber　content　reaches　4%　by　volume　of　RPC.