1,3- butanediol, referred to as 1,3-BDO for short, has the characteristics of good hygroscopicity, no odor, low toxicity, good water solubility, etc., and also has the reactivity of diol. Mainly used in the production of plasticizers, unsaturated polyester resins, industrial dehydrating agents, etc.; It can be used as humectant in cosmetics, and can be used in cosmetic water, cream, lotion, gel, toothpaste and other products. It can also be used as moisturizer and softener for textiles, tobacco and paper, and antibacterial agent for cheese or meat.