The invention discloses a method for extracting an urban road on a remote sensing image based on road intersection detection, which comprises the following steps: establishing a road intersection model, and extracting an initial road line based on the remote sensing image; performing intersection operation on the initial road lines to extract initial road intersection points, and constructing an initial road network; detecting and verifying the initial road intersection based on an image segmentation and intersection contour shape analysis method, and obtaining the type of the intersection andthe direction of a road communicated with the intersection; and selecting correct intersections according to the types of the intersections, and constructing a target city road network in combinationwith the connected road directions. The method has the advantages that the urban road is extracted based on the road intersection, a stable and reliable extraction result is provided for urban road network extraction, the integrity and accuracy are higher, and the defects that in the prior art, an algorithm does not have universality, and the requirements for road characteristics and ground object conditions are high are effectively overcome.