In order to proven the ability of Prunus humilis to adapt to alkaline soil,Na₂CO₃ stress methods was used to do the test of Prunus humilis on the enduring capacity of alkaline soil.The results showed that Prunus humilis had strong enduring capacity to alkaline soil.The growth of seedlings was the best in the treatments of 0.05% and 0.075% Na₂CO₃.When the content of Na₂CO₃ reached 0.1%（pH 9.5）,the growth and development of seedlings was depressed.So,Prunus humilis can be grown on slight acidic or slight alkaline soil.