If dizziness and slow heart rate, it is best to go to the hospital for examination to clarify whether there is organic disease and find the cause. Several common clinical diseases are: 1. slow arrhythmia, perfect ECG, dynamic ECG, and even cardiac electrophysiological examination to clarify whether there is pathological sinus node syndrome, AV block, intraventricular conduction block, and slow-type atrial fibrillation with long RR, etc. 2. whether there is organic Heart disease, a variety of heart disease in the late stage of electrical failure, there will be slow heart rate, dizziness and other symptoms. 3, to rule out the presence of hypothyroidism, improve the nail function and related tests to exclude other diseases. If hypothyroidism is the cause, supplemental physiological doses of levothyroxine sodium tablets can improve the patient’s symptoms. 4, other factors, such as hyperkalemia, need to actively search for the cause, there is a potassium reduction treatment to improve the patient’s symptoms, to solve the root cause of the patient’s disease.