  We study the critical properties of the quantum anomalous Hall (QAH) plateau
transition in magnetic topological insulators. We introduce a microscopic model
for the plateau transition in QAH effect at the coercive field and then map it
to the network model of quantum percolation in the integer quantum Hall effect
plateau transition. Generally, an intermediate plateau with zero Hall
conductance could occur at the coercive field. $\sigma_{xx}$ would have double
peaks at the coercivity while $\rho_{xx}$ only has single peak. Remarkably,
this theoretical prediction is already borne out in experiment. Universal
scaling of the transport coefficients $\rho_{xy}$ and $\rho_{xx}$ are
predicted.
