The effect of mixed cement and slaked lime on the properties of asphalt slurry was studied. By testing the high and low temperature properties and construction performance of asphalt slurry when cement and slaked lime were added under different replacement amounts, it was found that the softening point of the slurry increased, the viscosity decreased and the low temperature performance was improved after the addition of cement. However, when the replacement amount exceeds 60%, the improvement of the slurry ductility is reduced, so the cement replacement amount should not exceed 60%; When slaked lime was added, the softening point and viscosity of asphalt slurry increased significantly, and the BBR test showed that the low-temperature crack resistance deteriorated, but when the replacement amount did not exceed 20%, it had little effect on the low-temperature performance.