With the large-scale integration of rural renewable energy, such energy sources, influenced by natural conditions, exhibit significant randomness and intermittency. This not only exacerbates power grid fluctuations but may also triggers issues like voltage rise or drop at access points, frequency exceeding limits, and other problems, affecting the normal operation of electrical equipment and the overall power quality of the grid. To address the above challenges, a differentiated coordinated power dispatch strategy for multi-microgrids based on Stackelberg bi-level game theory is proposed.Firstly, a complementary model comprising two types of rural multi-microgrids—high-penetration and medium-penetration—is constructed. By differentially configuring the installed capacity of gas turbines, the power source structure is optimized. Secondly, a hierarchical flexible load regulation mechanism is designed, incorporating shiftable loads, transferable loads, and reducible loads, to enhance system flexibility and provide multi-level regulation means for mitigating power fluctuations. Finally, a "local autonomy-inter-grid mutual support" dispatch strategy is established based on the Stackelberg bi-level game. RT-LAB simulation experiments show that, compared to a single load regulation strategy, the proposed strategy reduces the peak-to-valley difference of renewable energy output by 5.6 %. Compared to a no-inter-grid mutual support strategy, the system operation cost is reduced by 22%. This method provides an effective solution for energy system development under the rural revitalization strategy.