The invention relates to a pavement base course material prepared from brick mixed building rubbish regenerated aggregate and a construction method thereof. A regenerated inorganic binder stable material layer with the thickness of 180-800 mm is constructed above a lower bearing layer, and a road pavement layer is constructed above the regenerated inorganic binder stable material layer; the regenerated inorganic binder stable material layer is formed by mixing brick mixed building rubbish regenerated aggregate grains and common aggregate and base gelation power and is divided into one layer to four layers, and every small layer selects one of three mixture ratios. The invention adopts the brick mixed building rubbish regenerated aggregate as a main raw material. By applying the brick mixed building rubbish regenerated aggregate to pavement materials, the invention solves the problems of low utilization rate, narrow range of application, small application quantity and the like of the brick mixed building rubbish. The application performance of the pavement base course material not only can meet the prior standard and the practical application condition requirement of engineering, but also has relatively better durability and mechanical property by test comparison of freeze thawing, strength and the like.