In order to describe destruction process and mechanism of the fiber reinforced high performance concrete (FRHPC) quantitatively, the failure probability model was established by using the pore fractal dimension and fracture mechanics theory through the compressive strength and pore structure parameters of 25 groups specimens with different water binder ratio and different curing system. This model considers not only the effect of pore fractal on the fracture complexity of the matrix, but also the effect of the fiber enhancement coefficient on the failure probability of the matrix. The regression analysis for this model shows that the probability of model calculation has a higher correlation with the test, which provides a new perspective and thinking of representation about the destruction process and mechanism of FRHPC quantitatively, and also verify the scientificity and practicability of the model at the side.