Al(OH)_3凝胶(简称铝G)为临床常用的制酸药。但由于Al(OH)_3在铝G 中的老化现象及附加剂的选用问题,直接影响着铝G 的质量。本文根据Al(OH)_3的性质、结构变化特点及混悬剂的质量要 Al (OH) _3 gel (referred to as aluminum G) is commonly used in the clinical acid. However, due to the aging phenomenon of Al (OH) 3 in aluminum G and the selection of additives, the quality of aluminum G is directly affected. In this paper, according to the nature of Al (OH) _3, the characteristics of structural changes and the quality of the suspension to be