Propafenone belongs to the IC class of antiarrhythmic drugs, and there is a cure rate when taking propafenone for arrhythmia for a long period of time; however, the condition of some patients is so serious that they cannot be completely cured. Most patients presenting with arrhythmia have a good prognosis, and with long-term administration of propafenone, the condition can be controlled and the associated symptoms can be alleviated. Some patients with more serious arrhythmia, simply taking propafenone is not effective, but also need to be combined with other anti-arrhythmic drug therapy, such as Betalock, Bisoprolol and so on. If patients with arrhythmia are combined with cardiac insufficiency or acute myocardial ischemia, the prognosis is poorer, long-term use of propafenone can not be completely cured, but can only alleviate the condition. People who are allergic to the ingredients of Propafenone need to be prohibited, and people with hepatic or renal insufficiency need to be cautious. If dizziness, headache, low blood pressure, physical fatigue and other symptoms occur during the use of the drug, they can be relieved after discontinuing use; if they cannot be relieved, the doctor should be informed promptly. The above drugs should be used in accordance with medical advice, under the guidance of a physician to standardize the use of drugs.