In order to determine whether nitrogen-fixing cyanobacteria and growth-promoting bacteria SM13 can increase rice yield and quality,a field plot experiment was conducted,four treatments,namely,conventional control(CK),treatment applied with nitrogen-fixing cyanobacteria(LZ),treatment applied with growth-promoting bacterium SM13(SM),treatment applied with nitrogen-fixing cyanobacteria and growth-promoting bacterium SM13(SL) were designed.The differences of aboveground dry matter weight,leaf area,plant breaking-resistant strength,yield and quality of rice were studied among different treatments.The results showed that the rice leaf area of SM treatment was significantly higher than that of CK at tillering stage,the total leaf area and aboveground dry matter weight of SL treatment was significantly higher than that of CK at full heading stage,the aboveground dry matter weight of LZ and SM treatments were significantly higher than that of CK at filling stage;the lodging index of SL treatment was lower than that of other treatments,which was significantly different from LZ and SM treatments in the second node of rice stalk,and significantly different from SM treatment in the third node of rice stalk,the lodging index of LZ and SM treatments were higher than that of CK,but there was no significant difference;the rice yields of SM,LZ and SL treatments increased by 9.46%,7.39% and 4.94% compared with CK,respectively;the rice integrity and taste scores of LZ,SM and SL treatments were significantly higher than those of CK,the rice aroma score of SL treatment was significantly higher than that of CK,but the chalkiness and chalky grain rate of LZ treatment were significantly higher than those of CK,and the protein content of LZ treatment was significantly lower than that of CK.In summary,in terms of yield,SM treatment was the best;in terms of lodging resistance,SL treatment was the best;in terms of rice quality,SM and SL treatments were better.