Abstract: Salinization not only decreases the productivity of cultivated land, but also seriously restricts its sustainable use, which directly affects the sustainable development of agriculture. A new thought of saline-alkali land amelioration is put forward. That is combining LCR with saline-alkali land amelioration so as to improve the productivity of saline-alkali land. Taking Lubotan LCR project in Pucheng county, Shaanxi Province as an example, from the engineering aspect of LCR, the saline-alkali land improvement and rehabilitation were studied.