Aluminum anodic oxide(AAO) films can be colored by a color pigment phenylazo-N,N-diphenyl propanicn diamide derivative,which is made through coupling reaction between N,N-diphenylpropanediamide derivatives and phenyl diazonium chloride on the AAO films.The process parameters for making AAO colored films and the property of AAO colored films were studied.The results show that the AAO films made under experiment conditions,ampere density 3-3.5A/dm²(AC),reaction temperature 25-35℃ for 1h,can be colored easily;The coupling conditions for coloring the AAO films are reaction temperature 5-10℃ and reaction time 5-20min,piperidine as catalysis,DMF as solvent.The test results shown that the thickness of colored films is >20μm.The study on protection properties shown that the colored films has permanent protective property: the grade of 168h salt spray test is 10;there is no change of the films during the 240h alternate hygrothermal test;the eroded grade of continuous 730 days nature-exposure test is 10.So the colored films has permanent protective and decoration properties.