Cold region arterial highway maintenance decision-making method and system based on dominant disease index

The invention discloses a cold region arterial highway maintenance decision-making method and system based on a dominant disease index. The method comprises the following steps: determining the cold region dominant disease index; calculating the correlation between the cold region dominant disease index and the asphalt pavement structure condition according to the cold region dominant disease index; establishing an evaluation index of the dominant disease index of the asphalt pavement based on the correlation; and establishing a cold region asphalt pavement maintenance decision model, and inputting the cold region dominant disease index, the correlation and the evaluation index into the cold region asphalt pavement maintenance decision model to obtain a cold region arterial highway maintenance decision scheme. According to the method, maintenance decision making is carried out on the arterial highway in the cold region for crack type dominant diseases in the cold region, the experience and level of a decision