The invention discloses a method for network system verification based on a routing model. By adopting the method, in the system verification process of a network control chip, system verification work begins by modularizing and modelling a routing function, and a verification period is shortened. By adopting the method, the system-level verification work does not depend on the design and verification of the routing function and is carried out as early as possible, meanwhile actual design is replaced by a routing model, and the simulation velocity can be greatly improved and resource consumption can be reduced in simulation verification. When a routing algorithm and the routing function need to be optimized and accessed, on one hand, the data obtaining speed is higher in a model mode, on the other hand, various types of trial modifications and designs are conducted on the model and are far easier than RTL codes of modification module design.