中性氧化铝在食品、保健食品、化妆品和药品等领域的含量测定中广泛用于样品的前处理。综述中性氧化铝在中药材及其饮片、中药制剂的含量中测定样品前处理的使用情况，有关粒度、pH值、含水量、装柱量等对测定结果的影响，对中性氧化铝在中药含量测定样品前处理中存在的问题及其对策进行探讨，以期为药检工作者提供参考。

Neutral aluminum oxide (NAO) is widely used in the content determination of food, cosmetics, and drug pretreatment. Study on the application of NAO in the content determination of the pretreatment for Chinese materia medica samples is reviewed. The problems and countermeasures of sample pretreatment are discussed, and a reference or the first-line drug testing studies are provided.