Abstract: As for a large number of steganographic programs hiding message in digital image on the internet,a steganalysis technique based on moment features was proposed in this paper.It could detect effectively whether or not secret messages were included in digital images by this technique.Multiresolution image representation could reduce the amount of data processing based on not missing effective information.Two new features were extracted,namely probability density functions(PDF) and characteristic functions(CF),which could reflect the change of statistical properties.And the clean image could be quantitatively decribed.A one classifier based a flexile linear was designed which had stable and soft feature.And the detection performance could be improved.