In recent years, human factors (such as fertilization) have accelerated the acidification of farmland soils, seriously endangering soil health and detrimental to global food production and sustainable soil use. The leaching experiment can well simulate the leaching of soluble salts in the soil and the process of soil change caused by fertilizer (amendment) entering the soil column, and has been widely used in the study of soil acidification mechanism, farmland soil environmental risk assessment, and soil remediation and improvement. However, the experimental conditions such as the leaching environment, soil and additives are different, so it is necessary for researchers to independently design the soil column structure and formulate the experimental plan according to the research purpose. Based on this, this paper reviews the research status of soil column leaching experiments at home and abroad, reviews the research progress of soil column leaching experiments in soil acidification process and acidification remediation technology in recent years, summarizes the details that need to be paid attention to in the design of soil column experiments, and looks forward to the application prospects of soil column leaching experiments in the field of soil acidification research, in order to provide new ideas and methods for the application of this method in soil acidification research.