Abstract: This paper is based on the failure of hardwood cutting and softwood cuttings in the field of Ulmus pumila. The temperature in the greenhouse is around 25℃. The spraying facilities always control the humidity above 90%. In the deep hole tray, the substrate is peat, vermiculite and perlite, the ratio is 2:1: 0.5, which is treated by different concentrations of IBA. The results showed that under the above conditions, IBA300 mg/L soaking for 15 min could effectively improve the production of adventitious roots in softwood cutting of Ulmus pumila.