Abstract: By using the variational method, the proof of the existence of the solution of the equation was transformed into finding the critical point of the corresponding energy functional of the equation, and the existence of infinitely many nontrivial solutions of the Kirchhoff-Schrodinger-Poisson system was obtained.

Key words: Kirchhoff-Schrodinger-Poisson system, variational method, sign-changing potential, nontrivial solution