Atrial flutter is known as atrial flutter, and the dangers of atrial flutter include angina pectoris, heart failure, and cerebral embolism, with treatments including medication and surgery. Atrial flutter has more harmful effects. Atrial flutter can lead to symptoms of palpitations (rapid heartbeat, often accompanied by panic), and it can also trigger atrial thrombosis, which can lead to embolism in the body circulation. Patients can die from diseases such as cerebral embolism, and atrial flutter can also induce angina and heart failure. Atrial flutter is often caused by hypertension, rheumatic heart disease and other organic heart disease, should be based on the treatment of primary diseases, the use of warfarin and other drugs for anticoagulation, while the use of verapamil, propranolol and other control of the ventricular rate of the drug to relieve the patient’s symptoms of heartburn, or DC resuscitation, catheter ablation and other therapies can be to terminate the attack of atrial flutter. Patients with atrial flutter should go to the hospital for timely treatment under the advice and guidance of doctors to avoid further progression of the condition.