The invention discloses a road guiding structure and a crossroad structure. The road guiding structure comprises an underground passage or overpass bridge located on a road centerline, wherein an access panel is arranged in the middle on the underground passage; the crossroad structure comprises a crossroad, wherein the center E and road junctions A, B, C and D of the crossroad are respectively provided with the road guiding structure, the front ends of the underground passages or overpass bridges of the road guiding structures located on the road junctions A, B, C and D are all inclined rightwards, and the front end of the underground passage or overpass bridge of the road guiding structure located on the center E of the crossroad is inclined leftwards. The road guiding structure disclosed by the invention can be used for stereoscopically separating a traffic flow at a conflict point through separating and leaping, and the crossroad structure can be used for realizing no cross points, no conflict points and no interweaving points of roads and is small in floor area, small in work amount, low in cost, convenient in traffic streamline, strong in traffic capacity as well as simplicity and convenience in design and construction.