［Purposes］It studies the expected value model of stochastic complementarity problems. ［Methods］Based on the penalty function method and the sample average approximation method, the expected value model for stochastic complementarity problems is solved. ［Findings］Under appropriate assumptions, the convergence and convergence rate of the optimal solution for the sample average approximation problem are proved. ［Conclusions］The results provide a new way to study stochastic complementarity problems.