The invention discloses a preparation method of an anti-freezing asphalt material. The preparation method comprises the following steps of: heating 20-50 parts by weight of raw material asphalt in a temperature control furnace till the raw material asphalt is molten, then, adding 5-50 parts by weight of an anti-freezing filler and 5-50 parts by weight of quartz powder into the molten asphalt, and uniformly stirring; and pouring a sticky mixture into a pre-heated aluminium-made mould to naturally level while the sticky mixture is hot, cooling to room temperature, and polishing the surface of a sample by using metallographical abrasive paper with certain meshes so as to obtain the anti-freezing asphalt material. The preparation method of the anti-freezing asphalt material disclosed by the invention is simple; the use amount of sodium chloride in the traditional salt deicing method can be greatly reduced; the anti-freezing asphalt material has the anti-freezing effect on water droplets with super-cooled surfaces in the range of 0-8 DEG C; even frozen at a lower temperature (such as -15 DEG C), the ice melting rate is rapider than that of the common surface; the asphalt material disclosed by the invention can be used for paving highway pavement and is capable of preventing the highway pavement from freezing in the range of 0-8 DEG C; and therefore, traffic accidents are reduced.