Electrolytes include items such as sodium and potassium. Minor abnormalities may have no obvious clinical manifestations, while serious disorders may manifest themselves in a variety of ways such as fatigue, low urine output and dizziness, depending on the ion. 1. Sodium abnormality (1) Low blood sodium: Since blood sodium is an important component for maintaining the osmotic pressure of crystals, depending on the degree of deficiency, it may manifest as a series of symptoms such as fatigue, weakness, low urine, thirst, dizziness, vomiting, muscle contracture, numbness of hands and feet, shock, coma, etc. (2) High blood sodium: mildly elevated with only thirst manifestation, while those with severe elevation may have accelerated heart rate, fatigue, dizziness, irritability, delirium, disorientation, fainting and other manifestations. 2. Potassium abnormalities (1) Hypokalemia: serum potassium is less than 3.5mmol/L. Early limb weakness, anorexia, nausea, vomiting and abdominal distension, aggravation may involve respiratory muscles, resulting in respiratory distress and asphyxia. ECG abnormalities include ST segment depression. (2) Hyperkalemia: serum potassium exceeds 5.5 mmol/L. There may be confusion, abnormal sensation, limb weakness, and fatigue. In severe cases, microcirculation disorders such as pale skin, cold wetness, numbness, soreness and other manifestations may occur. Severe hyperkalemia can cause cardiac arrest to occur. In addition, electrolyte disorders include calcium abnormality and magnesium abnormality. It is recommended to go to the hospital in time when the above symptoms occur.