The treatment of hypokalemia is divided into the following three areas: 1. Acute hypokalemia. For acute hypokalemia, emergency measures should be taken, while for chronic hypokalemia, as long as the blood potassium is not lower than 3 mmol per liter, the cause should be examined first, and then the cause should be treated, and the patient should be encouraged to eat more potassium-rich foods, i.e., the recovery of blood potassium should be reviewed. If the blood potassium is 3.0-3.5 mmol per liter, it is necessary to determine whether to supplement potassium according to the patient’s specific situation. Patients with past arrhythmias, congestive heart failure, heart failure being treated with digitalis, arrhythmias, ischemic heart disease and patients with myocardial infarction will require potassium supplementation. Patients in good condition are generally encouraged to eat more potassium-rich foods and take appropriate oral potassium supplements. If the blood potassium is lower than 3mmol per liter, then potassium should be supplemented. In mild cases, only oral potassium supplementation is needed, 10% oral potassium chloride is preferred, and the blood potassium should be tested during the process of potassium supplementation, if the blood magnesium concentration is lower than 0.5mmol per liter, then magnesium should be supplemented at the same time. For patients with severe disease, i.e. including patients with arrhythmia, rapid ventricular rate, severe cardiomyopathy, family periodic paralysis, potassium should be used intravenously, the commonly used preparation is 10% potassium chloride injection diluted intravenously, serum potassium and electrocardiogram should be monitored during the drip, for patients with combined acidosis or without low heart rate should be supplemented with 31.5% potassium glutamate solution 20 ml, added to 3. Correct the disorders of water and other electrolyte metabolism. Many of the causes of hypokalemia can cause the loss of water and other electrolytes such as sodium and magnesium at the same time, so it should be checked in time and must be dealt with actively once found. If there is the aforementioned, belong to hypokalemia is caused by magnesium deficiency, if not give magnesium supplementation, simple potassium supplementation is poor, can be intravenous supplementation containing magnesium polarization solution.