Unstable heartbeat need to perform ECG or dynamic electrocardiogram to further clarify whether it is an arrhythmia, unstable heartbeat common arrhythmias are as follows: 1, slow-fast syndrome belongs to a type of pathological sinus node syndrome, in the severe sinus bradycardia on the basis of recurrent atrial tachycardia, atrial flutter, atrial fibrillation, etc., this kind of patients with symptoms and the need for a permanent pacemaker implantation. 2, chronic atrial fibrillation Patients with chronic atrial fibrillation have fast and slow heart rate, and need to combine with whether the patient has underlying heart disease to choose drug treatment or radiofrequency ablation.3. Paroxysmal ventricular or supraventricular tachycardia, which is accompanied by organic heart disease, need to actively treat the underlying disease, and at the same time, use of amiodarone or metoprolol to control the heart rate, and need to be implanted with an ICD for treatment if necessary.