Occasional sudden fluttering of the heart may be caused by sinus tachycardia, cardiomyopathy, hyperthyroidism and other causes, different causes of different treatments, commonly used treatments for drug therapy and surgical treatment. 1. Sinus tachycardia: patients can use β-blockers under doctor’s guidance, such as atenolol, metoprolol, etc., and non-dihydropyridine calcium channel blockers can also be used as prescribed by the doctor, commonly used drugs are verapamil, diltiazem, etc., and some patients can also be prescribed by the doctor to carry out surgical treatment, such as catheter ablation. 2. Cardiomyopathy: patients can follow the doctor’s instructions to use digoxin, carvedilol, hydrochlorothiazide, amiodarone, warfarin and other drugs for treatment, if the effect of conservative treatment is not obvious, but also follow the doctor’s instructions to carry out surgical treatment, commonly used surgical methods such as septectomy, cardiac transplantation and so on. 3. Hyperthyroidism: patients can follow the doctor’s instructions to use anti-thyroid drugs for treatment, such as methimazole, propylthiouracil, etc., but also follow the doctor’s instructions to use propranolol, iodine and other drugs for treatment, if conservative treatment is not effective, but also follow the doctor’s instructions for surgical treatment, such as thyroidectomy. Specific treatments should be chosen under the guidance of the doctor after going to the hospital for examination and diagnosis, and patients should go to the hospital for regular review, so that the doctor can adjust the treatment plan according to the review situation.