The invention relates to a recycling treatment method of building waste, which comprises the following steps of: (1) breaking and sieving the building waste, taking an oversize product for future use,putting an undersize product in grinding equipment for refining to form refined powder for future use, (2) weighing and dissolving 7-10 parts of NaOH in 50 parts of soluble glass solution, performingsealing, leaving to stand and cooling to a room temperature to form a mixed solution, and (3) mixing, stirring and putting 0-10 parts by weight of oversize product, 60-80 parts by weight of refined powder, 55-60 parts by weight of mixed solution in step (2), 2-4 parts by weight of hydrogen peroxide solution, 5-15 parts by weight of municipal sludge with a water content of 70-80%, and 0.25-1.25 parts by weight of an assistant in a mold for sealed storage, performing heating, cooling and demolding to form a building waste based heat insulating material. Compared with the prior art, the method is simple in technology and low in cost and energy consumption, and solves the problems of large floor area and difficult consumption of the building waste, and at the same time, a recycled product hasa higher additional value and wider application prospects.