To explore the suitability of grass planting one lawn under backfill conditions as well as the impact of irrigation with reclaimed water on grass growth and soil properties. This paper chooses Lolium perenne as the test subject by setting up three groups, fresh water irrigation, reclaimed water irrigation and fresh+reclaimed water alternative irrigation in the form of indoor pot experiment. It studies the impact of irrigation with reclaimed water on grass growth and soil properties in Hohhot. The results showed as follows: (1) Compared with fresh water irrigation, lawn with fresh+reclaimed alternative irrigation and reclaimed water grows by 23% and 34% respectively. (2) The scores of quality, coverage and evenness of lawns indicate: reclaimed water irrigation＞fresh+reclaimed alternative irrigation＞fresh water irrigation. But the difference is not significant (P＞0.05). (3)When the observation is ended, the salt of soil irrigated by fresh+reclaimed alternative irrigation and reclaimed water increases by 8% and 3% respectively. (4) With different irrigating waters, Lolium perenne’s absorption of soil heavy metals varies and the heavy metal contents are different in the soil. The results showed that reclaimed water irrigation has an obvious role in enhancing the growth rate of the lawn and the color of the lawn irrigated by reclaimed water is visibly better than others (P＜0.05). At the same time, the further analysis of test soil and lawn showed that claimed water irrigation will not impose soil damage on lawns and soil is not affected. It can be seen that it is feasible to irrigate lawn with reclaimed under backfill conditions in the short term.