Soil salinization has become a worldwide problem. Saline-alkali landofChinais characterized by extensive distribution and large area. Moreover, the degree of soil salinization is becoming more serious in cultivated land. As the population of China increases and cultivated land is degraded, to improve and utilize saline-alkali land reasonably is of great significance and importance. This paper summarizes the application, effect and the advantage and disadvantage of techniques in improving saline-alkali land, including water conservancy measures, physical measures, chemical measures and biological measures. Biological measure is discussed in detail and considered as the most economical and effective way to improve saline-alkali land. In the future, comprehensive strategy which integrates water conservancy measures, physical measures, chemical measures and biological measures, and adjusts these measures to local conditions should be used to improve and utilize saline-alkali land.