The invention relates to the field of building environmental protection, in particular to a building waste recycling device applicable to low-temperature conditions. An intermittent feeding assembly is fixedly connected to a crushing device, the crushing device is in transmission connection with the intermittent feeding assembly through a belt, a metal separation assembly is fixedly connected to the lower end of the crushing device, the metal separation assembly is positioned below the intermittent feeding assembly, the metal separation assembly is in transmission connection with the crushingdevice through a belt, a curing stirring assembly is fixedly connected to a base, and the curing stirring assembly is positioned below the right end of the crushing device. The building waste recycling device can be used for carrying out crushing treatment, metal removal treatment and construction waste curing treatment on large wall wastes in construction waste, sludge can be used as an engineering filler after being cured, the construction cost is saved, the stacking of the construction waste is avoided, the recovery processing efficiency of the construction waste is improved, the utilization rate of resources is effectively improved, the environmental pollution is reduced, and the labor intensity is low.