Some　basic　algorithms　and　theories　are　discussed　for　9-shaker　random　vibration　test　control　in　this　paper.　A　correct　algorithm　RMS　is　presented　without　considering　influence　of　cross　spectrum.　The　algorithm　can　make　the　control　spectrum　of　convergence　stably　and　fastly.　In　order　to　solve　the　problem　of　multiple-point　input　and　output　synthetically　weighting　control,　Finite　Markov　Chains　and　Algorithmic　is　set　forth　for　the　first　time　to　form　the　main　control　matrix.　Finally　through　Matlab　simulation　and　the　results　show　that　the　method　can　meet　the　engineering　demand.　©　2013　Universitas　Ahmad　Dahlan.