The normal range of blood potassium in human body is 3.5-5.5mmol/l. Potassium deficiency needs to go to the hospital in time to check the cause of the disease, and it is not recommended to use medicine privately. Potassium deficiency is usually caused by insufficient intake of potassium ions, excessive discharge of potassium, renal tubular acidosis, etc. Generally speaking, you can choose potassium chloride delayed-release tablets, potassium-magnesium menthonate oral solution, potassium citrate granules and other drugs to relieve the problem. 1. Insufficient intake of potassium ions: If potassium deficiency is caused by insufficient intake of potassium ions in the body due to prolonged partiality or anorexia, potassium chloride delayed-release tablets can be chosen. This drug is used to treat hypokalemia caused by various reasons, such as insufficient food intake, vomiting, severe diarrhea, etc. It is forbidden for patients with hyperkalemia, very low urine output and uropathy, and should be swallowed without biting, and occasional reactions such as nausea, vomiting and abdominal pain can be seen. 2. Excessive discharge of potassium: If the potassium deficiency is caused by excessive discharge of potassium, potassium magnesium menthylate oral solution can be chosen. This drug is used in the treatment of hypokalemia, cardiac arrhythmia caused by digitalis intoxication, etc. Allergy, hypomagnesemia, severe renal dysfunction are prohibited, and should not be used in combination with potassium-preserving diuretics, which may have gastrointestinal reactions such as loss of appetite, vomiting and diarrhea. 3. Renal tubular acidosis: If potassium deficiency is caused by renal tubular acidosis, potassium citrate granules can be chosen. This drug is used in the treatment of hypokalemia caused by various reasons, such as insufficient food, vomiting, the application of potassium diuretics, etc. Hyperkalemia and other groups of people are prohibited, acute renal insufficiency, acute dehydration, etc., with caution, part of the patient oral intake may have a sense of odor and gastrointestinal tract irritation symptoms. The above drug selection should follow the doctor’s instructions, if there is any discomfort, it is recommended to consult a doctor in time.