The invention discloses a regenerated warm mix asphalt mixture which is formed by mixing regenerated warm mix asphalt, new mineral aggregates and an old asphalt mixture, wherein the regenerated warm mix asphalt is formed by mixing asphalt with a compound warm-mixing regenerant. The compound warm-mixing regenerant is a composite material of a surfactant and oil regenerant. The invention further discloses a preparation method for the regenerated warm mix asphalt mixture. The preparation method comprises the step of uniformly mixing the regenerated warm mix asphalt with the old asphalt mixture. According to the invention, the compound warm-mixing regenerant is added into the asphalt to prepare the regenerated warm mix asphalt, and the regenerated warm mix asphalt is added into a mixture of the new mineral aggregates and the old asphalt mixture to form the regenerated warm mix asphalt mixture. The preparation method for the regenerated warm mix asphalt mixture is simple, lower in mixing temperature, and capable of reducing emission of a harmful gas, lowering the environmental pollution and enabling the mixing amount of the old asphalt mixture to reach 50%. And meanwhile, the prepared regenerated warm mix asphalt mixture has very good pavement performance.