The present invention discloses an operation interaction method and apparatus of a distributed generation and a micro grid considering impact of a new electricity reform policy, and a calculation device. The method is suitable for execution in the calculation device. The distributed generation and the micro grid are used as energy units and are accessed to a distribution network. The method comprises the following steps of calculating contribution values of each energy unit for the distribution network, wherein the contribution values comprise a scheduling contribution value and a clean energy consumption contribution value; calculating contribution rates of each energy unit for the distribution network according to the contribution values of each energy unit for the distribution network, wherein the contribution rates comprise a scheduling contribution rate and a clean energy consumption contribution rate; acquiring an excitation conversion factor of the distribution network and excitation contribution amounts of the distribution network for each energy unit, wherein the excitation contribution amounts comprise a scheduling contribution amount and a clean energy contribution amount; and calculating an excitation amount of the distribution network for each energy unit according to the excitation conversion factor and the contribution rate and excitation contribution amount of each energy unit, so as to optimize energy efficiency of the energy units and perform operation interaction.