In this work, we investigate the problem of event-triggered stabilization for a class of stochastic nonlinear systems. An event-triggered control (ETC) approach is proposed by introducing an additional internal dynamic variable. The presented event-triggered mechanism (ETM) can guarantee the existence of a positive lower bound on inter-event times (or called inter-execution times). In addition, the presented technique can ensure the second moment asymptotic stability of the closed-loop stochastic nonlinear system. (C) 2018 Published by Elsevier Ltd.