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This paper focuses on developing a simulation model for the analysis of natural gas gathering pipeline network system. The simulation mathematical model of the pipeline element and non-pipeline element in natural gas pipeline network is established, the implicit difference method is used to change the partial differential model into the finite difference equations. In order to determine the unknown pressure and flow parameters, the Newton–Raphson solution technique is applied to solve the model. The simulation model is used to analyze the pipeline network in a gas field. The result simulated comparing with the actual parameter showed that the developed simulation model enabled to determine the parameters with less than 5% relative error. And we can see from the simulation results that: the pressure in each pipeline does not exceed the allowable pressure, the pressure drop is small in the pipeline network, and the flow in part of pipeline is very small. Therefore, we can adjust the gas transmission scheme, and increase the gas transmission volume properly.