The invention belongs to the technical field of energy-saving building design, and discloses a system and method for processing energy-saving building design information by adopting digital simulation, and the system comprises an environment data collection module, a power supply module, a central control module, an energy consumption calculation module, a parameter simulation module, an energy-saving report generation module, an energy-saving assessment module, and a display module. According to the invention, the energy consumption calculation module carries out energy consumption identification based on the grouped buildings, so that the buildings with excessive energy consumption and the energy-saving buildings can be identified more accurately, the energy consumption of urban buildings can be reduced, and the targeting property of energy-saving work can be improved; meanwhile, the system is feasible and convenient to calculate through an energy-saving evaluation module, evaluationindexes and standards can be flexibly adjusted, computerization is convenient to achieve, and the energy-saving level of a building can be visually and accurately reflected by establishing a matter element model of the evaluation indexes, describing the characteristics of observable objects and expressing an evaluation result through quantitative numerical values.