Abstract: Electrolytes are widely distributed inside and outside of cells， involved in many important functions and metabolic activities and play an important role in biological activities. Because of the neurohumoral abnormalities， less food intake，application of diuretics and ACEI/ARB，the patients with chronic congestive heart failure have always electrolyte disturbances. Studies have shown that electrolyte disturbances could result in disease aggravation， death and re-admissions. Therefore， it is very important to investigate the mechanism， complication and treatment of heart failure complicated with electrolyte disorder.

Key words: heart failure, electrolytes, diagnosis, therapy, prognosis