A rapid repair cementitious material for asphalt pavement semi-rigid base, involving the composition of a fast-setting and hardening cementitious material, with its components and contents being: Fast-Setting Cement: Sand: Stone: Water Reducer: Fiber: Special Additives: Water = 15-85%: 0-65%: 0-50%: 0-0.1%: 0-2%: 0-5%: 5-25% by weight percentage, where the total amount of all components is 100% wt. After conventional mixing for 15-90 seconds, it is applied according to the construction method for repairing asphalt pavement semi-rigid bases. Tests show that its initial setting time is 2-10 minutes and final setting time is 10-30 minutes. Therefore, using this invention's material can reduce the repair time of asphalt pavements to within 4-8 hours, thereby significantly alleviating the impact of road repairs on traffic congestion. It has great economic and social significance.