When fresh blood is taken in clinical practice, it is necessary to add some disinfected sodium citrate to prevent blood clotting, so sodium citrate is called anticoagulant. Used as a flavoring agent and stabilizer in the food and beverage industry; Used as an anticoagulant, expectorant, and diuretic in the pharmaceutical industry in Chemicalbook; In the detergent industry, it can replace sodium tripolyphosphate as a non-toxic detergent additive; It is also used for brewing, injection, photography pharmaceuticals, and electroplating. It is one of the basic drugs used in biological experiments.