Abstract: To provide a theological basis on improving saline-alkali soil and spreading grass growing techniques, the soil pH, organic matter, available N, P, K content change in different grass years of pear orchard were studied. The inter-row and inter-plant soil in the orchard with golden pear [Pyrus pyrifolia (Burm. f.).cv.‘Nakai’] grown with grass for 2, 3 and 4 years respectively were compared with that of the clean cultivated pear orchard. The correlation analysis between soil pH and soil organic and soil elements was studied. In pear orchard with grass growing, the pH of inter-row soil were depressed 1.2%-3.4%, inter-plant soil were depressed 0.6%-4.08%; the organic matter of inter-row and inter-plant soil were both increased, especially for the grass 4 years, inter-row soil were improved 64.6%; the available N, P, K were both improved; correlation analysis showed that soil pH and organic matter and available N, P, K showed a negative correlation relationship.