Abstract: With the maturity of technologies, distributed generations were widely used in distribution networks and played an active role in improving reliability of power service, reducing power supply cost, and reducing environmental pollution. By analyzing the power supply reliability, economy, and environment-friendliness of distribution network with distributed generations, a comprehensive evaluation model for the distributed generation interconnection scheme was established, based on which an evaluation method of distributed generation interconnection scheme with the objective of optimizing aggregate utility was proposed. The effectiveness of this method was verified by evaluating several distributed generation interconnection schemes of an actual distribution network.