The effect of no-till (NT) opening seedbed characteristics on soil moisture, crop growth, yield and water use efficiency (WUE) was studied in the field experiment at Daxing in Beijing in 2008～2010. The results indicated that no-till opening seedbeds could increase the capacity of water storage. Compared with traditional tillage seedbed, volumetric soil water content increased by 0.2%~2.7% in 0~30 cm soil layer and the crops growth were also promoted. The best results were achieved by the seedbed of NT with the opening depth of 20 cm. Compared with traditional tillage seedbed, NT with the opening depth of 20 cm increased winter wheat yield and WUE by 2.4% and 7.4%, and summer maize yield and WUE by 1.2% and 1.5%, respectively. The study showed that 20 cm could be the suitable opening depth for no-till seeding in northern China plain. 