A projection analysis of C 2 R model is adopted to calculate the safety investment, and benefit. On this basis, GM(1.1)model (Grey prediction model) is established to predict the safety benefit and safety investment values of 2017. This integrated method of C 2 R model and GM(1.1)model provides a direction and theoretical reference for optimizing the investment and a structure for the effective operation of mining industry occupational health and safety management system,