First of all, potassium brine is widely used in the field of agriculture. It can be used as a source of potassium in fertilizers to provide nutrients needed by plants and promote plant growth and development. Moreover, potassium salt brine can also be used for soil improvement to improve the fertility and water retention capacity of soil. Secondly, potassium salt brine has important applications in the chemical industry. It can be used as electrolyte, catalyst and raw material to participate in various chemical reactions and synthesis processes. Moreover, potash brine can be used to prepare products such as glass, detergents and soap. Finally, potash brine also has medical and healthcare benefits. It can be used to treat certain diseases such as hypokalemia and hypertension.