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We propose a multiscale kinetic scheme for Vlasov Poisson equations.Usually the Vlasov Poisson system solved by splitting scheme which solve the transport and source terms seperately,our scheme is able to accurately approximate the solution in both kinetic and diffusion regimes,the key point is the unsplitting treatment of the transport and source terms in the evaluation of local solution of the distribution function.It is asymptotic preserving when thethe mean free path is small.