对教材中硫酸铜晶体的制备方法进行了分析与改进,以稀硫酸为介质、双氧水为氧化剂合成硫酸铜晶体并测定其结晶水,改进后具有产率高、功能多、毒害少等优点,完全符合实验教学改革的要求. The preparation method of copper sulfate crystal in the textbook was analyzed and improved. The dilute sulfuric acid as medium and hydrogen peroxide as oxidant were used to synthesize copper sulfate crystals and determine its crystal water. The improved method has the advantages of high yield, more functions and less poisoning. In line with the requirements of experimental teaching reform.