To determine effects of nitrogen-fixing bacteria and phosphate-solubilizing bacteria on the sticky rice CK 2003 grown in alluvial soil in Chau Phu district, An Giang province, Vietnam, a greenhouse and a field experiment were carried out. The results showed that the nitrogen-fixing bacteria and phosphate-solubilizing bacteria with additional chemical fertilizer helped increase the leaf color index, plant height, number of shoots/bush, dry weight of root, number of spikelets/bush, grain yield and 1000 grain weight compared to the control in the net house experimental conditions. When using phosphate- solubilizing bacteria combined with 100%N and different levels of P₂O₅, nitrogen-fixing bacteria  combined with 75%N+100% P₂O₅ and  nitrogen-fixing bacteria associated with phosphate-solubilizing bacteria and fertilizer from 50-75%N, 50-75% P₂O₅ the agronomic characteristics and yiel components were not significantly different compared to treatment used 100%N +100% P₂O₅ and without inoculation. In the field experimental conditions, the nitrogen-fixing bacteria associated with the phosphate-solubilizing bacteria and 50%N+ 50% P₂O₅ helped increase the agronomic characteristics and yield components of sticky rice such as dry weight of bush increased 2.85 times (185.06%), actual yield increased 1.48 times (44.8%), 1000 grain weight increased 3.97% compared to the control. So, when applying this formula in cultivation of sticky rice, 50%N and 50% P₂O₅ could be saved.