The invention discloses an expressway flow-splitting area speed controlling and advanced flow-splitting implementation method based on traffic conflicts. The method comprises the steps that flow-splitting indication signs are arranged at the portion, 1 km away from the front of a flow-splitting outlet end, outside guard bars at the right side, and converging-forbidding marks are drawn in a flow-splitting triangular area of the front of the flow-splitting outlet end; sight induction marks of which the heights are increased in sequence are arranged at the portion, 1 km away from the front of theflow-splitting outlet end to a transition section starting point, outside the guard bars at the right side to constitute spatial low-frequency vision information flow; sight induction marks of whichthe heights are lowered in sequence are arranged at the portion, within the range from the transition section starting point to a ramp, at the edges of the outer sides of the guard bars, and visual illusion marks are arranged on the pavement of a deceleration lane to constitute spatial medium-frequency vision information flow; arranging protruding road signs at the portion, 1 km away from the front of flow-splitting outlet end to the flow-splitting ramp, at the outer sides of the road edges, delineators are arranged on the guard bars, and guide marks with different colors are laid at curbs atthe left side, the lower edges of columns of the guard bars at the right side and the pavement to constitute spatial high-frequency vision information flow. By means of the expressway flow-splitting area speed controlling and advanced flow-splitting implementation method, multi-frequency and multi-layer information is adopted, the sense of speed is effectively improved, and vehicles are guided inchanging lanes in advance.