OBJECTIVE:To analyze the situation of antiarrhythmic drugs used in40hospitals of Guangdong Province.METHODS:To investigate antiarrhythmic drugs used during the past three years in aspect to the sum of money of consumption,DDDs and daily cost.RESULTS:The increasing rate of consumption sum of antiarrhythmic drugs during the pe?riod2000～2002has been lowered year by year,while the share of market of domestic drugs showed an increasing tendency,the imported drugs decreased year by year,the drugs produced by joint ventures kept steady.Metoprolol and potassium magnesium aspartate were much more frequently used than others.Metoprolol occupied the first place in the list of sum of mon?ey.CONCLUSION:The marketing of antiarrhythmic drugs will further expand in China and the pharmaceutical factories should strengthen the development of new antiarrhythmic drugs.