Compare with the voice service, mobile data service is more complex. It has many types of services according to different network resources and the customers' habits. It is found that mobile data business model plays an important role in helping operator understand the customers' habits, and market promotion. It can also be used in network optimization. The old ways to get the mobile data service model can not be widely used due to some weakness. In this paper, a new method to get the mobile data service model is proposed. By using the method, we got the mobile data model and analyzed the data model in different kinds of way, such as the impact of mobile phone. The testing results shows that it can get good performance on network optimization using the mobile data model got by the proposed method.