This　work　provides　a　novel　hybrid　methodology　for　the　adaptive　sliding　mode　control　of　chaotic　dynamical　systems　with　uncertainties　via　support　vector　machine,　and　develops　an　adaptive　lower　switching　gain　control　law　without　chattering.　The　method　tested　for　the　Duffing　and　Chua＇s　circuit　system　shows　excellent　performance.