MB reservoir in H oilfield is mainly carbonate reservoir with pores,and water injection development is the main development method.The quality of injected water affects the effect of the oilfield development.The injected water quality standard of H oil field was studied,and the main control indexes such as the median particle size,suspended matter content,oil content and bacteria content of the injected water were obtained by core displacement experiment and dynamic corrosion experiment.The results showed that the median particle size index of suspended solids was less than or equal to 2.5 μm.Suspension content index was no more than 10 mg/L,oil content indexwas no more than 15 mg/L,the content of saprophyte (TGB) should be no more than 100 per mL,the content of iron bacteria (IB) should be no more than 10 per mL,and the content of SRB should be no more than 10 per mL.The results provide experimental basis for water injection quality standards in H oilfield,and also provide reference for research on water injection quality in similar areas.