Sudden rapid heartbeat and blurred consciousness, mostly considered as hypoglycemia, hypotension, arrhythmia, generally need to immediately rest on the spot, if there is no relief, should promptly consult a doctor, improve the relevant examination and treatment of the cause, such as hypoglycemia, give supplemental glucose. 1. Hypoglycemia: glucose can be taken orally, if necessary, intravenous glucose. At the same time, search for the cause of hypoglycemia, such as diabetic drugs, should be adjusted under the guidance of the doctor glucose-lowering drugs; such as insulinoma, can be surgically removed for treatment. 2. Hypotension: actively look for the causes of hypotension, such as caused by physical weakness, should pay attention to strengthening nutrition; such as caused by antihypertensive drugs, should comply with the doctor’s instructions to stop antihypertensive drugs or adjust the use of medication; such as infection, serious trauma, the need for timely rehydration, anti-infection and symptomatic treatment. 3. Arrhythmia: If serious hemodynamic disorder is suspected, dopamine and other emergency treatment should be given in time, and at the same time, according to the patient’s specific situation, the use of amiodarone, lidocaine and other antiarrhythmic drugs as prescribed by the doctor for treatment, and catheter ablation can be carried out if necessary. Pay attention to the side effects such as bradycardia and thyroid function abnormality during the treatment with medication. There are many other causes of sudden rapid heartbeat and fuzzy consciousness, when this happens, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to clarify the cause of the disease and actively treat it, so as to avoid causing adverse consequences.