Abstract Based on the analysis of problems and deficiencies of conventional experiments, this paper improved experiments with reverse thinking. Through the reversal of the order of adding reagent, an inverted operation of an experimental instrument or environment,reverse analysis of conclusion, some experiments were improved such as the preparation of ferrous hydroxide precipitation, sodium bicarbonate solution was titrated with hydrochloric acid, LED was used to judge the anode and cathode of primary battery, reversed experimental environment to improve the flame reaction, and etc.
