The invention discloses a multi-business flow generation system based on a network flow model, which is characterized by comprising steps of establishing a flow model for choosing a corresponding network flow model to perform modeling according to the attribute of the network flow business and the generation rule,and generating a network flow having the self-similarity or the multi-fractal characteristic, improving a wavelet operation module for designing a generation algorithm of a network flow on the basis of the multi-fractal wavelet model, choosing a wavelet primary function and performing parallelized improvement and verifying a flow operation module for detecting the adaptivity through a variance time method and the multi-fractal spectrum so as to verify the stability and reliability of the network flow.