The invention discloses a small energy Internet multi-source optimization comprehensive evaluation method and system. The method includes the steps of establishing a three-level comprehensive evaluation index system, acquiring index parameter data, acquiring an actual evaluation parameter matrix, performing standardized processing on the actual evaluation parameter matrix, performing normalized processing on the normalized evaluation parameter matrix, comprehensively weighting various indexes in the three-level index system, establishing a comprehensive evaluation model, solving an evaluation value of an efficiency energy Internet multi-source optimization scheme, and evaluating whether the optimization level meets the multi-source optimization requirement for a corresponding region. With the invention, the mixed multi-attribute complex evaluation index system is established from the three aspects of energy network optimization, energy utilization optimization and energy service optimization, the running small multi-source energy Internet is evaluated comprehensively, and a reference basis is provided for the optimization construction of the energy Internet.