To get insight into the possible outcomes,we formulate an ODE model for the interactions between wild and transgenic mosquito populations,which is subject to state-dependent impulsive perturbations. By first investigating the dynamics of the unperturbed system,we determine certain sufficient conditions for the existence and orbital stability of positive order- 1 solution of the model system with state-dependent impulsive perturbations. Their feasibility is then illustrated by means of numerical simulations.