1, 3-butanediol is mainly used in organic synthesis, is the preparation of polyester resin, carbamate resin, alkyd resin, plasticizer, polyurethane coating raw materials, can be used as a wetting agent and softener, medicine, dye intermediate, surfactant, plasticizer, hygroscopic agent, coupling agent, solvent, food additives and flavor agent.It is also used as a humidifier and softener for textiles, paper and tobacco.