The invention provides a normal temperature recycled asphalt mixture and a preparation method thereof and belongs to the asphalt field. The normal temperature recycled asphalt mixture is prepared from the components, by weight, of 1.4%-1.8% of recycled asphalt, 38.2%-38.6% of aggregate and 60%-60.4% of waste asphalt mixture. The recycled asphalt is alpha methyl styrene class regenerant modified matrix asphalt. The normal temperature recycled asphalt mixture is prepared with the following method: the matrix asphalt and the alpha methyl styrene class regenerant are blended at the temperature of 90 DEG C to 130 DGE C, heat preservation is performed, and the recycled asphalt is obtained; the recycled asphalt, the aggregate and the waste asphalt mixture are blended at the temperature of 120 DEG C to 140 DEG C, and the normal temperature recycled asphalt mixture is obtained. According to the normal temperature recycled asphalt mixture, the purpose for recycling waste asphalt at relative lower temperature is realized, and the mixture has better pavement performance and environment protection and economy benefits.