  In this paper, we investigate a tunneling mechanism of massless particles
from the Schwarzschild black hole in the framework of polymer quantum
mechanics. According to the corresponding invariant Liouville volume, we
determine the tunneling rate from Schwarzschild black hole by the polymeric
quantization procedure. In this regard, we show that the temperature and
tunneling radiation of the black hole receive new corrections in such a way
that the exact radiant spectrum is no longer precisely thermal.
