Potassium deficiency in the body can be manifested as generalized muscle weakness, numbness of limbs, dizziness, anorexia, nausea, vomiting, dyspnea and other symptoms. Potassium in the human body mainly maintains acid-base balance, participates in energy metabolism and maintains muscle excitability, which makes the muscles show powerful contraction and diastole. Potassium deficiency will cause generalized muscle weakness, numbness of limbs, dizziness, blurred vision, dyspnea and other symptoms. Potassium ions are also very important to the peristalsis of the intestines and stomach. Potassium deficiency will weaken the peristalsis function of the intestines and stomach, triggering symptoms such as nausea and vomiting. When the body lacks potassium ions, it is recommended to eat foods rich in potassium ions, such as bananas, spinach, etc., which can effectively replenish potassium ions in the body. Potassium deficiency can be seen in other diseases, it is recommended to go to the hospital to identify the cause of the disease and then under the guidance of the doctor for the next step of diagnosis and treatment.