The necessity of constructing risk management and control system for safety production in electricity production enterprise is analyzed, and the design framework of the system is introduced. The dynamic risk management model based on Bayesian network is put forward. Bayesian network structure and parameters are also built after risk factors identification and evaluation. Based on these, the risk assessment and risk diagnostic for safety production are carried out. Finally, the risk is controlled in accordance with the result. This system could meet the needs of safety supervision and management in electricity production enterprise.