Abstract: It is a major initiative for coal resource integration to improve the enterprise's safety management and accident prevention level. However, there is a lack of scientific basis to take the size of the production capacity as the resource integration and closed of enterprise. The major accident risk assessment model of coal enterprise is set up through the introduction of risk assessment theory, reference standard of resources integration in coal mine is proposed based on the results of the risk assessment. An applied case shows that it relatively conforms to reality as reference standard of resources integration in coal mine, which will promote resource integration to be a long-term mechanism to improve the level of safety management in coal industry.