Abstract: The oscillation problems for a class of impulsive nonlinear parabolic distributed parameter systems with neutral term are considered. By using a technique of treating neutral term and some results of first order impulsive delay differential inequalities, some new sufficient differentiation conditions are established for the oscillation of all solutions of such systems under Dirichlet boundary value condition. The conclusions fully reflect the influence action of impulse perturbation and delay effect in the system oscillation.