Basalt fiber unidirectional cloth is an engineering material woven from high-performance basalt fiber. Basalt fiber unidirectional cloth is uniformly coated with a sizing agent suitable for phenolic and epoxy resin on the monofilament, which meets the performance requirements of polyester, epoxy, phenolic, nylon and other resins, and is added with various sizing agents. This kind of resin-matched coupling agent can give full play to the reinforcing effect of basalt fiber unidirectional cloth. Basalt fiber unidirectional cloth is used in construction and bridge reinforcement and repair, and it has more outstanding comprehensive performance and cost-effective than carbon fiber unidirectional cloth.