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In this paper, we propose a novel wavelet-domain digital image watermarking scheme on copyright protection based on network manufacture environment. It codes the watermarking with error correcting coding and encrypts the watermarking with chaotic encryption. It embeds the watermarking into the coefficients which have large absolute values in the middle-frequency parts got by Discrete Wavelet Transform(DWT)repeatedly. The extraction doesnt need the original image. Experiment results show that the proposed scheme is easy to implement, and has good robustness to some attacks, such as JPEG compression, average filtering, median filtering, wiener filtering, pepper & salt noise, especially to cropping and scaling. In order to solve the problem of the copyright protection of the network manufacture production, the problems of digital image production such as tamper preventing and watermarking attacks preventing and so on are discussed. It solves the problems of manufacture information such as secure exchange and transmissions and production copyright protection and so on.