药品的批号与有效期，国家卫生行政部门早有明文规定，应该认真执行。药品的有效期是指药品在一定的储存条件下，能够保证质量合格的时限。而常见的“失效期”，国内属非规范用词，很少采用，但国外药品常以失效期表示药品的使用期限。批号的识别方法：药品的批号是用于识别产 Drugs batch number and expiration date, the state health administrative department has long been expressly provided that it should be implemented conscientiously. The expiration date of the drug refers to the time limit for the quality of the drug to be guaranteed under certain storage conditions. The common “expiration date”, the domestic non-standard terms, rarely used, but the expiration date of foreign drugs often expire the use of drugs. Batch identification method: the batch number of the drug is used to identify the production