In this paper, we study the existence and multiplicity results for the nonlinear Schrodinger-Poisson systems {-Delta u + V(x)u K(x)phi(x)u = f(x, u), in R-3 -Delta phi = K (x)u(2), in R-3. (*) Under certain assumptions on V. K and f, we obtain at least one nontrivial solution for (*) without assuming the Ambrosetti and Rabinowitz condition by using the mountain pass theorem, and obtain infinitely many high energy solutions when f (x,.) is odd by using the fountain theorem. (C) 2011 Published by Elsevier Ltd