Respiratory acidosis manifests as central nervous system symptoms, circulatory system symptoms and other system symptoms. 1. Central nervous system symptoms: headache, insomnia, mental excitement, agitation, hallucinations, confusion, coma and other manifestations. 2. Circulatory system symptoms: rapid heart rate, high blood pressure, ventricular fibrillation or cardiac arrest. 3. Other systemic symptoms: respiratory center inhibition and impaired renal function. Respiratory center inhibition is manifested as dyspnea, hyperventilation, shortness of breath, cyanosis and other manifestations. Impaired renal function manifests as decreased urine output, proteinuria, electrolyte disorders and hyperkalemia. If the above symptoms occur, it is recommended to consult a doctor in time to minimize the adverse effects of the disease.