Atrial fibrillation refers to atrial fibrillation. Generally, atrial fibrillation can be treated with cardioprotection pills, which are adjunctive therapeutic measures that protect blood vessels and relieve symptoms. Atrial fibrillation is a common type of arrhythmia and a serious disturbance of the electrical activity of the atria. Baoxinwan belongs to a kind of proprietary Chinese medicine, from a pharmacological point of view, because Baoxinwan to a certain extent can play a role in protecting blood vessels, optimizing the role of new blood vessels, and can effectively alleviate the symptoms of precordial pain, so atrial fibrillation can be used to Baoxinwan, to play a supplementary therapeutic role in the disease. However, pregnant women, athletes and people who are allergic to this product are forbidden to take heart-preserving pills, so as not to adversely affect health and aggravate the original disease. Secondly, some patients may experience numbness of the tongue after taking cardioprotection pills under the tongue. To summarize, patients with atrial fibrillation must take cardioprotection pills under the guidance of a doctor, and must not use the drug on their own, so as not to aggravate the condition. At the same time, they need to strengthen the daily life management and go to the hospital regularly for follow-up.