Abstract: This is an article in the field of ceramics and composites. In order to improve the mechanical properties of concrete, basalt fiber is used to prepare torsional members of gangue concrete. The empirical formula is used to predict the elastic modulus of concrete with four kinds of basalt fiber content. Then, the finite element software is applied to carry out torsion numerical simulation of gangue concrete members and the empirical formula of ultimate bearing capacity is proposed. The results show that the error between the predicted elastic modulus and the measured one is relatively small. The torsion curves of the basalt fiber modified concrete members obtained by numerical calculation accord with the measured results of related tests. Adding basalt fiber into gangue concrete can significantly improve the bonding performance of concrete mortar, which thus strengthens the torsional resistance of concrete members.