Due to the rapid development of information and technology, counterfeit raw materials, technology readily available, low cost, high profits, attracted unscrupulous traders are willing to obtain illegal benefits. Although by key industry to invest a lot of manpower and resources in the suppression of counterfeit market, but the anticounterfeiting technology and ineffective technology can not be improved, so we did not touch the core of security, resulting in unscrupulous businessmen low entry barriers, so that the annual loss of business continued to rise in. This study is the use of special moiré principle to improve anti-counterfeiting technology, the moiré technique used in synthetic fabrics and patterned with security effects, can be grating plate group, which decrypted image.