Micro grid is an effective organization form of the distributed resource. Micro grid technology integrates the relationship between distributed resource and distribution network, which realizes the distributed generation controllable, and solves the problem that distributed generations access distribution network. Micro grid can be regarded as a controllable unit of the power grid, which can run under either grid-connectedness or independence. This paper discusses microgrid operation control solution based on three-layer structure, which adopts the microgrid communication technology based on IEC61850 standard, dynamic stability control technology with rapid response, and microgrid energy management steady control technology based on optimizing operation. Finally, a practical engineering of micro grid is introduced.