Abstract: The correlation degree of the adjacent intersections was studied and the model was established. By analyzing the adjacent intersection period, the coordination phase flow, turning ratio, distance and other factors that affect the correlation degree of the intersection, the cycle, the turning ratio and the intersection spacing were determined as the main parameters to evaluate the correlation degree of the intersection. The calculation model of the correlation degree of adjacent intersections was established. The correlation degree of two adjacent intersections was determined by the size of the correlation coefficient, and the scientific rationality of the established model was discussed and an example was analyzed. The results show that the model established in this paper can better describe the relationship between two adjacent intersections.