Abstract: An rapid method for determination of volatile phenol in refinery waste water was proposed,based on the combination of 4-amino-antipyrine coloring principle with flow injection technique.The analysis rate was 40 samples/h,and the linear range of the analysis 0.75~23.0μg/ml.The relative standard deviation(n=10) was 2.8% for phenol standard solution with the concentrtion of 1.50μg/ml.Comparing with conventional method,the determintion results for refinery samples were satisfactory,and it had no remarkable difference.