This paper introduced the understanding of the concept of smart micro-grid in domestic and international authority. It pointed out that micro-grid was an effective form to achieve active power distribution in intelligent grid and an important part of the intelligent grid. It summarized and discussed the theory of intelligent micro-grid control. [1]It divided control strategy into the follow of grid control strategy and the formation of grid control strategy. Each class contains an interactive and non-interactive control idea at the same time. It has given a clear definition and criteria for judging and proposed future direction of the intelligent micro-grid control strategy.