Abstract: The present invention discloses a method, system, storage medium and device for evaluating adaptive reuse of existing residential buildings. The method includes: substituting the research data of a to-be-evaluated residential building into an adaptability evaluation system to obtain an evaluation result, and determining a reuse mode of the to-be-evaluated residential building at a region position of a reuse mode decision-making matrix according to the evaluation result; the research data includes current quality data and reuse value data; each region of the reuse mode decision-making matrix corresponds to one reuse mode for existing residential buildings. According to the present invention, adaptability index data of the existing residential buildings are extracted through sample analysis based on a mathematical model, so that the evaluation value of the adaptability is obtained, and the most suitable reuse mode is determined by means of the reuse mode matrix.