Hypokalemia should be supplemented with potassium ions, such as oral potassium chloride tablets or intravenous potassium chloride injection, and treated for the cause of the disease. Most hyperkalemia is associated with acute diarrhea, massive vomiting, excessive fluid replacement, heavy use of diuretics, and certain diseases. Symptomatic treatment should be carried out together with the treatment of the cause. 1. Symptomatic treatment: Severe hyperkalemia may lead to flaccid paralysis and cardiac arrhythmia, which may jeopardize the patient’s life, and should be treated in time. It can be treated by oral administration of potassium chloride or intravenous potassium supplementation. 2. Treatment for cause: if it is caused by kidney, such as primary aldosteronism, surgical resection of adrenal tumor should be carried out, and hypokalemia can be cured after surgery. In the case of heavy use of diuretics, the blood potassium concentration will gradually return after stopping or reducing the dosage. For acute diarrhea, the blood potassium concentration will also rise gradually after the diarrhea improves. For hypokalemia, it is recommended to consult the doctor in time and actively search for the cause. After clear diagnosis, follow the doctor’s instructions to standardize the treatment and avoid self-medication.