There are several symptoms of lactic acidosis: first, hypoxia, the human body in the absence of oxygen, will cause a significant increase in lactic acid production and lactic acid accumulation, when there will be cardiopulmonary dysfunction and vascular obstruction situation generating insufficient oxygen. In addition, in a variety of shock such as cardiogenic shock, hypovolemic shock, heart failure, asphyxia will also cause hypoxia, the patient will have dizziness, headache, nausea, vomiting, limb weakness, numbness and so on. Secondly, when patients are in lactic acidosis, there is also a transient loss of consciousness with lifelong effective blood volume deficiency, such as flushing, decreased blood pressure, confusion, coma, and deep and rapid breathing. Third, in the cardiovascular system, there are also arrhythmias, tachycardia, and vasodilatation. Fourth, in the kidney function, there may be oliguria and anuria. Fifth, in the neurological system, muscle strength and muscle tone may be reduced, and tendon reflexes and reflexes may disappear.