Sodium citrate, also known as sodium citrate, is a common anticoagulant used in vacuum blood collection. It is in the form of white powder crystals and has an anticoagulant effect. The anticoagulant principle of sodium citrate is mainly due to the chelation between its citrate ions and calcium ions in blood samples, thereby affecting the coagulation effect of calcium ions on blood. When using fresh blood in clinical practice, it is necessary to add some disinfected sodium citrate to prevent blood clotting. Therefore, sodium citrate is used as an anticoagulant. In addition, sodium citrate is also widely used in the food, beverage, and spice industries as an acid flavoring agent, seasoning agent, preservative, preservative, buffering agent, etc. In addition, due to its non-toxic nature and good stability, sodium citrate can also give food a stable taste and flavor. However, although sodium citrate is an alkaline substance that can balance the body's pH and be beneficial for relieving fatigue after exercise, long-term excessive intake may have adverse effects on the body. Sodium citrate contains a large amount of saccharin, which may cause symptoms such as dizziness, nausea, and vomiting after long-term consumption. Therefore, daily diet needs to be matched reasonably to avoid excessive intake. In addition, it should be noted that sodium citrate is a prescription drug in medicine and should be used under the guidance of a doctor to avoid self use. When using blood collection tubes containing sodium citrate, it is also necessary to follow the guidance of professional medical personnel to ensure the accuracy and safety of the operation. In summary, sodium citrate, as an important chemical preparation, has a wide range of applications in medicine and daily life. However, relevant guidance and precautions should be followed during use to ensure its safety and effectiveness.