An one dimensional fluid model for discharge occurring in AC PDP cell is developed

and the multi pulse discharge characteristics of AC PDP cell is studied by numerical analysis in this paper.This model is based on the dual fluid description of electron and ion transfer

include the particles continuity equations and momentum transfer equations

coupled with the Poisson equation and circuit equation.In calculation

the filled gas is assumed as helium and in the local equilibrium state

in which the reacting rate of every kind particles is assumed to be a function of E/P and worked out by solving the stable Boltzmann equation in He.In this paper

the behavior of multi pulse discharge under 50kHz square waveform driving voltage occurring in AC PDP cell is simulated

and the distributions in space and variation as time of some parameters during discharge are calculated.These parameters include the voltage

discharge current and the density of kinds of particles and potential etc.