Aiming at the problem to control pests by irregularly releasing predators and spraying pesticides，Weconstruct an impulsive model with density dependence term by using the theorem of impulsive differential equations.}e discuss the pest impulsive control model with density dependence term and game the sufficient conditions for thelocally asymptotical stability and globally asymptotical stability of pest-extinction periodic solutiongivingthecondidonsofconsistence.