High electrolytes refer to high levels of certain ions such as chloride, sodium, potassium and other ions in the plasma of the body. Electrolytes are essential for maintaining acid-base balance and intracellular environmental homeostasis in the body, and can be involved in many important functions and metabolic activities in the body. If electrolyte metabolism disorder occurs in the body, the concentration of various ions in the body is out of balance, which will cause the destruction of the intracellular environment homeostasis, so that the physiological functions of organs and material metabolism of the whole body will be impaired accordingly, which can lead to death in serious cases. If the patient shows changes in potassium, sodium and chloride ions, it may be due to trauma, massive vomiting, etc.; it may also be due to chronic renal insufficiency and hepatic insufficiency when the patient will show different degrees of electrolyte imbalance. If patients have high electrolytes, they should seek medical attention to identify the cause to avoid delays.