To study the effects of chemical fertilizerreduction and its application with organic fertilizer，soilconditioner， and functional fertilizer on soilfertility，bacterial communitydiversity，and rice growth and development in saline rice fields to provide a theoretical basis for chemical fertilizer reduction and efficiency enhancement in saline rice fields in thisregion. In thisstudy，rice‘1747’was used as the test material fortwo consecutiveyears，and five fertilizer treatments were setup，namely，100% chemical fertilizertreatment(CF)，20% chemical fertilizerreduction(RF)，20% chemical fertilizerreduction with organic fertilizer(OF)，20% chemical fertilizerreduction with soil conditioner(SC)，and 20%chemical fertilizer reduction with functional fertilizer(FF). The results showed that the RF treatment reduced soil pH and total solubility salt for twoconsecutive years by 0.58% and7.17%，respectively，compared to the CF treatment. And underreduced chemical fertilizerapplication，OF，SC，and FF treatments significantly reduced soil Na +，Ca2+，HCO3-，and Cl -contents，and also improved soil fertility. The chemical fertilizer reduction rationingtreatments(OF，SC，FF)enhanced the diversity of soil bacterialcommunities，while changing the structure of soil bacterialcommunityphyla，increasing nutrient rich bacterial communities such as Actinobacteria, Proteobacteria, and Bacillus, and reducing nutrient poor bacterial communities such as Chlorobacteria and Acidobacteria. RDA analysis showed that the main factors affecting the bacterial community phylum structure were availablephosphorus，availablepotassium，and total nitrogen. Compared with CFtreatment，the chemical fertilizer reduction rationing treatments(OF，SC，FF)increased rice spikelength，grainnumber， thousand-grainweight，and yield by3.56%-6.48%，11.20%-24.95%，8.81%-6.28%，and6.04%-18.39%，respectively. In acomprehensiveanalysis，the 20% reduction of chemical fertilizer with functional fertilizer can effectively improve saline soilfertility，and bacterial communitydiversity，thus promoting rice growth anddevelopment，which can achieve the purpose of saline soil improvement and sustainable rice development.