Abstract: 【Objective】 To clarify the ecological effects of different grass growing modes on climate environment and soil of apple orchards in southern Xinjiang in the hope of providing theoretical basis for the selection of artificial grass growing modes suitable for green and sustainable production of apple orchards in the region. 【Methods】 The effects of natural grass, clover and dandelion on temperature, humidity and soil physicochemical properties of apple orchards were studied, and the grass conditions of 4 grass orchards in southern Xinjiang were investigated. 【Results】 (1) Polygonum aviculare were the dominant species in natural herbarium, with vigorous growth and moderate height, but poor coverage; Clover in the garden was highly suitable and had strong covering power, but its yield was deficient. In the dandelion garden, the overall height of dandelion was suitable, and the growth was good, but the ground cover was not. (2) Apple orchard clover and dandelion grass models could effectively reduce the ambient air temperature and increase air humidity; the decrease range of near ground temperature and the increase range of humidity under the cultivation of grass were higher than those under the cultivation of dwarf grass. (3) Compared with clear tillage treatment, natural grass treatment could significantly increase the content of 30-60 cm alkali-hydrolytic nitrogen. The contents of organic matter, total nitrogen, alkali-hydrolyzed nitrogen, available phosphorus and available calcium in 0-30 cm and 30-60 cm soil and the contents of available potassium in 30-60 cm soil were significantly increased under the treatment of clover. Compared with clear tillage treatment, dandelion grass treatment could significantly reduce the soluble salt content of 0-30 cm and 30-60 cm soil, and effectively increase the organic matter content of 30-60 cm soil. 【Conclusion】 The effect of grass on the climate environment of apple orchard is significant. The temperature near the ground and the humidity increase, and the content of soil alkali-hydrolytic nitrogen and various nutrients increases to a certain extent, which helps to improve the soil environment and the orchard environment.