The invention discloses an asphalt-aggregate interface adhesion property testing method. The method comprises the following steps: A, selecting three testing liquids which are not dissolved in asphalt and have known surface energy; B, heating the asphalt or a warm mixing agent till a flowing state is achieved, respectively casting on a plate, cooling to form a smooth plane, and grinding aggregate into a smooth plane of which two sides are parallel to each other; C, respectively dripping the three liquids on the smooth plane formed by the asphalt, the warm mixing agent or the aggregate in the step B, and respectively measuring contact angles of three testing liquids on the surface of the asphalt, the aggregate or the warm mixing agent; D, calculating the surface energy of the asphalt, the aggregate or the warm mixing agent; E, respectively constructing adhesion models in different systems, and calculating adhesion work of the adhesion models; and F, establishing energy parameters, and evaluating the influence of an additive to the adhesion property of asphalt-aggregate in an implementation sequence of steps A, B, C-F or B, A, C-F. By adopting the asphalt-aggregate interface adhesion property testing method, the influence of the additive to the adhesion property of the system can be evaluated.