Abstract: In order to improve the power supply economy, reliability,and clean energy consumption capacity of the microgrid, a bi-level optimization configuration model of wind/light/water/biogas/storage microgrid capacity considering the source-load uncertainty is proposed. The outer layer is the multi-objective configuration optimization layer,and the inner layer is the operation optimization layer.In order to deal with the source-load uncertainty,the typical day selection method based on scene reduction is used. And the chance constraints are introduced into the inner model,which use probability constraints instead of traditional deterministic constraints. The calculation example shows that the proposed method reduces the construction and operation cost of microgrid,and improves the clean energy consumption capacity,power supply reliability and the ability to deal with the source-load uncertainty.