Hypokalemia generally has two common methods of potassium supplementation. The first is oral potassium supplementation, and the second is intravenous potassium supplementation. Oral potassium supplementation is the safest method, for example, taking potassium chloride sustained-release tablets orally, as well as potassium chloride injection solution orally, and eating more potassium-rich vegetables and fruits. The second method is intravenous potassium supplementation. For intravenous potassium supplementation, it is important to pay attention to the patient's urine output. If the patient's urine output is adequate, intravenous potassium supplementation can be appropriately performed, and the concentration of intravenous potassium supplementation should not exceed 0.3% to prevent arrhythmias caused by hyperkalemia. (Please use medications under the guidance of a doctor.)