Electrolytes play an important role in the human body. Electrolytes are widely distributed inside and outside the cell, mainly composed of inorganic salts as well as substances in the form of ions, which can participate in many important functions and metabolic activities in the body and play a very important role. Among them, ions such as potassium and sodium can maintain the level of crystal osmotic pressure, and also maintain the resting potential of nerve, muscle and cardiomyocytes, and participate in the body’s nerve conduction and metabolism, and the inorganic salts can maintain and regulate the level of acidity and alkalinity of body fluids. If the electrolyte of sodium and potassium ions is disturbed, there will be weakness, muscle pain, decreased urination, thirst, etc. If the metabolism of calcium ions is disturbed, hyper-hypercalcemia can occur. If the above conditions occur in the body, go to the hospital for electrolyte checking. In milder cases, drinks containing electrolytes can be consumed to maintain the balance of electrolytes and acid-base, and to relieve thirst and dehydration.