Patients with hypokalemia can recover after treatment to correct their blood potassium levels. In mild cases, oral potassium supplements are usually sufficient for 1-2 days, but in severe cases, intravenous potassium chloride drips are required to relieve symptoms. Patients with different degrees of hypokalemia require different treatments. Patients with mild hypokalemia can take oral potassium chloride extended-release tablets for potassium supplementation, and their blood potassium levels will return to normal after 1-2 days, and their symptoms will be restored. However, for patients with severe hypokalemia, potassium supplementation is needed as soon as possible. Oral potassium chloride is less efficiently absorbed through the gastrointestinal mucosa and may even be life-threatening, so intravenous potassium supplementation is recommended to save the patient’s life. At the same time, the cause of hypokalemia should also be treated, otherwise potassium supplementation is ineffective and prone to relapse. In addition, in the patient’s daily diet, more potassium-rich foods, such as bananas and spinach, should be consumed and nutrition should be enhanced.