Through employing the single-factor experimental design,the performance study under different parameters for the inverted cone parameters of air-lifted hydrocyclones was implemented,including employing numerical simulation to analyze both flow-field characteristics and distribution law which boasting of different inverted cone heights,gas injection diameters and gas injection velocity parameters.The results show that when the inverted cone height stays at 130 mm,the gas injection diameter is 1.8 mm and the gas injection rate is 3.5 m/s,the separation efficiency becomes best,which is 0.98%higher than that before being optimized.Comparing the oil core's distribution patterns in the air-lifted hydrocyclone before and after optimizing the inverted cone parameters,the oil cores optimized can be formed above the inverted cone structure and which promotes cyclone separation performance and verifies importance of the optimization of the inverted cone parameters for the air-lifted hydrocyclone.