Based on activity of requirements process

it sets up simulation model by way of set and relation algebra

and proposes the consistency judgment of multi-layer queuing and relevant matrix to analysis the dynamic characteristic of the process.The identification proves that the time complexity of algorithm does not exceed polynomial

and experiment shows that the simulation model and analysis method are effective in predicting defect and bottleneck existing in the requirements process

which helps to dispel the defect and optimize the requirements process.