  Schwarzschild black holes with quantum corrections are studied under scalar
field perturbations and electromagnetic field perturbations to analyze the
effect of the correction term on the potential function and quasinormal mode
(QNM). In classical general relativity, spacetime is continuous and there is no
existence of the so-called minimal length. The introduction of the correction
items of the generalized uncertainty principle (GUP), the parameter $\beta$,
can change the singularity structure of the black hole gauge and may lead to
discretization in time and space. We apply the sixth-order WKB method to
approximate the QNM of Schwarzschild black holes with quantum corrections and
perform numerical analysis to derive the results of the method. Also, we find
that the effective potential and QNM in scalar fields are larger than those in
electromagnetic fields.
