In order to optimize the composition ratio of basalt-polypropylene resin concrete composite, a new type of high-strength basalt-polypropylene fiber resin concrete specimen was prepared by orthogonal experiment, and the effects of different factors on the mechanical and thermal properties of the material were analyzed. The experimental results show that the factors influencing the compressive strength of the basalt-polypropylene fiber resin concrete composite are as follows: the amount of resin, fiber, aggregate and filler. The amount of resin is the main factor of compressive strength of composites; Considering the compressive strength and thermal expansion coefficient of basalt-polypropylene fiber composite, the optimal ratio of each factor is as follows: resin content 12%, fiber content 1.6%, aggregate content 79% and filler content 7.4%; The maximum compressive strength of the tested fiber resin concrete can reach 121.33MPa, and the coefficient of thermal expansion can reach 11×10-6.℃-1. The thermal expansion coefficient of the basalt-polypropylene fiber composites decreased by 8.3% compared with that before the addition.