细胞外囊泡（EVs）作为药物载体具有广阔的应用空间。近年来研究发现EVs作为信号分子在细胞通讯中起重要作用。这些囊泡既可以包裹内源性物质，如RNA、质粒DNA、酶和神经递质等，又可装载外源性治疗药物，像渡轮运送"货物"一样，发挥其天然的载体功能。本文作者综述药物载体的概念，EVs的来源、分类，EVs作为递送系统可携带的物质类型，药物的装载方法及给药途径，EVs作为药物载体的优点和缺点，以及目前其作为药物载体在临床中的应用前景，目的是探寻EVs作为药物载体的发展前景和策略，从而为相关疾病的靶向治疗提供理论依据。

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