Human electrolytes are inorganic salts and proteins in human body fluids, substances that exist in ionic form, such as sodium ions, potassium ions, calcium ions, magnesium ions, etc. The main functions of human electrolytes are to maintain the body’s pH balance, to maintain the body’s osmotic pressure balance, to maintain the integrity of cell structure and function, and to participate in the body’s nerve conduction and metabolism. When the body has electrolyte disorders, it will lead to diseases, such as sodium metabolism disorders may cause hypernatremia, hyponatremia, weakness, irritability, muscle pain and other symptoms; potassium metabolism disorders may cause hyperkalemia, hypokalemia, indifferent expression, muscle pain and weakness, thirst, nausea and other symptoms; calcium metabolism disorders will cause hypercalcemia, hypocalcemia, etc., appearing unresponsiveness, Disorders of calcium metabolism can cause hypercalcemia, hypocalcemia, etc., and symptoms such as unresponsiveness, indifference, increased muscle tone, hand and foot twitching, etc.; disorders of magnesium metabolism can cause hypermagnesemia, hypomagnesemia, dizziness, muscle spasm, movement disorders, etc. Clinically, electrolyte analyzer is usually used to check the electrolytes of human blood, in order to understand the electrolyte level in the body, to maintain the balance of the body environment, usually patients with kidney disease, severe dehydration and other patients need to be electrolyte check before treatment.