The invention discloses a method and equipment for recycling waste heat of tail gas generated by aluminum trippolyhosphate condensation reaction. The method comprises the following steps: a waste heat exchange system is installed in a pipe of the tail gas generated after condensation reaction of raw materials used in aluminum trippolyhosphate production; the tail gas at 200-400 DEG C generated after condensation reaction enters a heat conductive pipe in a waste heat exchanger through a flue gas pipe at the tail gas outlet of a condensation reaction furnace to transfer heat into the waste heatexchanger; the clean air delivered into the waste heat exchanger through a frequency conversion fan is heated from 5-40 DEG C to 100-200 DEG C into hot air; and the hot air enters a secondary heat exchanger through an air pipe to be reheated and then delivered into a product drier for use. In the invention, by recycling the waste heat of a large quantity of the high-temperature tail gas generatedduring the process of aluminum trippolyhosphate condensation reaction, the tail gas emission temperature is reduced, the generated hot air can be directly applied to drying products, fire coal is saved and production energy consumption of aluminum trippolyhosphate is lowered.