The invention discloses a transportation industry energy consumption prediction method. The method comprises steps: the transportation industry is classified; historical energy consumption data are acquired, and energy consumption data for each sub class are calculated; the energy consumption growth of each sub class in a predicted period is calculated; the energy consumption growth in the predicted period is predicted; and the energy consumption of the transportation industry in the predicted period is calculated. The invention also discloses a system for realizing the transportation industry energy consumption prediction, which comprises a first acquisition module, a second acquisition module, a first calculation module and a prediction model in serial connection sequentially, wherein the first acquisition module is used for acquiring the historical energy consumption data; the second acquisition module is used for acquiring change information in the predicted period; the first acquisition module is used for calculating the energy consumption changes in the predicted period; and the prediction model is used for predicting the transportation industry energy consumption in the predicted period. Various classes of data information can be used comprehensively, and the accuracy of the predicted energy consumption can be effectively improved.