The contents soil exchangeable acidity of purplish soil, yellow earth, red earth and latosol were measured respectively by the methods of KCl leaching, BaCl₂ leaching, NaAc leaching, KCl-TEA (Triethanolamine) extraction and BaCl₂-TEA extraction in order to accurately measure the content of soil exchangeable acidity in acidified soil. The results showed that the measured content of soil exchangeable acidity followed the order of BaCl₂-TEA extraction > KCl-TEA extraction > NaAc leaching > BaCl₂ leaching > KCl leaching. Among the five measurement methods, the methods of BaCl₂ leaching and KCl leaching are the two novel methods which could be used to measure more accurately the content of soil exchangeable acidity of acidified soil. Comparatively, the contents of soil exchangeable acidity measured by BaCl₂-TEA extraction, KCl-TEA extraction and NaAc leaching were a bit higher due to the influence of soil organic acids and Al oxides, however, further studies should be conducted on the measurement of soil exchangeable acidity and its influential factors because of the lack of standard method to verify the current experimental results.