There are provided a gemcitabine composition comprising a pH-adjusted gemcitabine aqueous solution of which the stability is ensured for a long time at a room temperature, a pharmaceutical package comprising the composition of which the amount is divided into a basic unit container and an auxiliary unit container, and a method for preparing them.提供一種吉西他濱的組合物,包含調節過pH值的吉西他濱水性溶液,在室溫下保證長期維持其穩定性、一種包括此組合物的藥物包裝,其組合物的量分裝在一個基本單位容器和一個輔助單位容器中、及其製備方法。