The static loading bending tests and the cyclic loading bending tests at different stress levels were conducted on reactive powder concrete(RPC) specimens with different multi walled carbon nanotube(MWCNTs) contents, the influence of different MWCNTs contents on the bending strength and fatigue properties of RPC were analyzed, and the fatigue lives of RPC with different MWCNTs contents were fitted based on the Weibull distribution equation. It is shown that the bending strength of RPC was effectively improved and the fatigue resistance of RPC was significantly enhanced at a certain MWCNTs content, and the increase of bending strength and the fatigue resistance of RPC can be reached the peak when MWCNTs content is 005%. The life distributions of RPC at different stress levels can be predicted by Weibull distribution equation.