Abstract: Surface treatment effects were compared with alkali, water, softening agent and silane coupling agent and its constitutions of basalt fiber (B.F.) were determined. On the basis of these researches, ecomaterials were prepared by means of basalt fiber and plant fiber. The results showed that the basalt fibers were dispersed symmetrically in the plant fiber and excellent characteristics of the basalt fiber and the plant fiber were exerted adequately, respectively. The configuration of the composite was described in terms of the random coil model and scanning electro microscopy (SEM). The effect factors of beating degree, content of basalt fiber and adhesive, etc were discussed. As-prepared composite was of repeatable utilization, high ratio performance and price, no second pollution. As a result, the composite harmonized with environment and accorded with requirement of environmentally benign materials.