In order to screen potassium-solubilizing bacteria suitable for the preparation of biological fertilizers in arid regions,potassium feldspar powder was used as the sole potassium source,the potassiumsolubilizing ability of five bacteria strains (LG1,LG8,WG33,WG36 and WG40) was explored,and an experiment was conducted under simulated drought condition to explore the effects of inoculating fermentation broth on the drought resistance of maize seedlings. Results showed that,all the five strains had potassium-solubilizing ability,sequenced as WG33>LG1>WG40>WG36>LG8,WG33 ranked the first,and the soluble potassium content in the fermentation supernatant reached 7.73 mg/L.Under drought condition, inoculating five potassium-solubilizing bacteria enhanced the plant height of maize seedlings,decreased the MDA content and increased POD,SOD activities, indicating that the five potassium-solubilizing bacteria strains can improve the drought resistance of maize seedlings.