“守恒思想”是化学学科的核心思想之一,是定量研究物质变化的永恒主题.守恒思想主要包括质量守恒、电子守恒、电荷守恒.本文从物质推断、离子共存、化学计算、图像分析四个方面分析守恒思想在化学解题中的应用. “Conservative thinking” is one of the core ideas of chemistry, and it is the eternal theme of quantitative study of material change.Conservation idea mainly includes conservation of mass, conservation of electrons and conservation of charge.From the material inference, ionic coexistence, chemical calculation, image analysis Analysis of four aspects of conservation ideas in the chemical problem solving application.