Abstract: Basalt fibers(BF) has excellent mechanical properties, insulating properties and green environmental protection. However, the applications of basalt fibers in the field of paper-based materials are limited by their chemical inertness and poor dispersion properties. In this study, Basalt fiber paper matrix composites were prepared from basalt fibers and aramid pulp meal by means of wet papermaking and impregnation hot pressing process. And this paper investigated the dispersion properties of basalt fibers and the effect of the preparation process of paper matrix materials on the properties of paper. The results show that the dispersion of basalt fiber increases from 60.4% to 88.43%, and the tensile index of the paper made from a 5∶5 blend of basalt fiber and aramid pulp meal increases 2.4 times ,when basalt fibers are pre-treated in 2.9 mol·L⁻¹ hydrochloric acid solution at 51 ℃ for 14 h and then were dispersed in an aqueous environment with fiber concentration, conductivity, water temperature, and pH of 0.8 wt‰, 2.0 μS·cm⁻¹, 60 ℃, and 3, respectively, and then finally 6.0 wt% of sodium carboxymethylcellulose, a dispersing agent, was added to the suspension of basalt fibers; the addition of aramid pulp meal enhances the strength and insulating properties of basalt fiber paper; the basalt fiber paper matrix composites are prepared from basalt fiber paper impregnated with 5.0 wt% phenolic resin and cured by hot pressing, which show a significant improvement in various properties, among which the tensile index and breakdown strength were increased by 105.85% and 54.10%, respectively. This study provides a new idea to broaden the application field of basalt fibers and to realize the application of functionalized basalt fiber paper matrix composites on photovoltaic backsheets.