As the complexity of large-scale enterprise application increases, supplying performance verification staging becomes very important. Starting from analyze the architecture of an e-commerce development platform model based on 3-tiered Web, using queuing network theory, we propose a reusable e-commerce development platform based on 3-tiered Web. Finally, we implement the evaluation algorithm and the calculation of the balanced job bounds with the help of MATLAB and test the experimental data in LoadRunner benchmark.