Some people with potassium deficiency may have no obvious symptoms, but those with severe potassium deficiency may experience weakness, numbness of the limbs, nausea and vomiting, and mental depression. There are individual differences in the manifestation of potassium deficiency. The concentration of potassium ions in the blood of normal people is between 3.5 and 5.5 mmol/L. In some cases, potassium deficiency is not serious and may not be accompanied by any uncomfortable symptoms. However, for those with severe potassium deficiency, muscle symptoms such as weakness, muscle weakness, numbness of limbs, muscle pain and digestive system symptoms such as nausea and vomiting, loss of appetite, abdominal distension, etc. may occur. In addition to the above, severe potassium deficiency may also cause central nervous system symptoms such as depression, slow reaction, drowsiness, coma, and other symptoms such as increased nocturia, tachycardia, etc., which will affect the quality of life and health. Clinical treatment for potassium deficiency mainly focuses on potassium supplementation, which can be done through dietary supplementation, oral supplementation or intravenous infusion. It is recommended that people with potassium deficiency should take a balanced diet and take medication as prescribed by the doctor if necessary, and should not use medication indiscriminately or adjust the dosage of medication on their own.