The invention discloses a method for recycling polytetrafluoroethylene microporous materials. The method comprises the following steps: (1), cutting polytetrafluoroethylene waste into fine particles with diameters being about 0.5-1.0mm by using a short fiber cutting machine, then ultrasonically cleaning the fine particles in an ultrasonic cleaner containing organic solvents and water in sequence, and then drying the fine particles; (2), sintering the dried polytetrafluoroethylene powder for 30-60 minutes at a temperature of 290-350 DEG C and then quenching the dried polytetrafluoroethylene powder in liquid nitrogen for 2-5 minutes; (3), rapidly transferring the quenched polytetrafluoroethylene powder to a ball mill to perform low-temperature wet ball milling, and then grinding the powder for 4-6 hours through ball milling beads with rough surfaces; and (4), carrying out suction filtration, drying and screening on polytetrafluoroethylene powder slurry subjected to ball milling to obtain polytetrafluoroethylene recycled powder with unequal meshes being 200-1000. The method is simple and efficient in process; through the method, the problem that the polytetrafluoroethylene microporous materials are difficultly recycled can be solved.