At present, there is no injected water standard or recommended water quality criteria for the fractured-vuggy reservoir. Taking the Tahe oilfield fractured-vuggy carbonate reservoir as study object, the influence of suspended substances concentration, particle size and oil content on 0.1 mm fractured and 0.1-2 mm vuggy man-made cores is studied. And, the result indicates that, two kinds of core have the same regularity with respect to suspended substances concentration, particle size and oil content change. when the core has been injected 5 000 PV injected water, the particle median diameter of suspending substances is 30 μm, and the core permeability declines less than 40 percent accordingly; when it runs up to 40 μm, then its permeability declines about 99 percent; when the suspending substances concentration is 30 mg/L, core permeability declines less than 5 percent, but when it is 45 mg/L, its permeability declines about 99 percent; when the oil content is 40 mg/L, the core permeability declines less than 50 percent, when it is 60 mg/L, its permeability descends about 70 percent. Because of large water channels and low injected pressure, it is suggested that the core permeability declining no more than 50 percent can be the quality criterion of injected water for these kinds of reservoirs. So, the particle median diameter of suspending substances of no more than 30 μm, suspending substances concentration of no more than 30 mg/L and oil content of no more than 40 mg/L might be three injected water quality criteria for fractured-vuggy carbonate reservoir in Tahe oilfield.