The wavelet function feedback method is proposed for controlling beam halo-
chaos for high intensity proton beam in a periodic-focusing channel. After
control for four different primary proton distributions,the halo intensity
factor become zero,other statistical physical quantities (such as r(rms) an
d P-av(2)) and relative average emittances are more than doubly reduced. Si
mulation results show that the method is very effective and has its prospec
t for application.