Semi-Prezidential System were extremely little wide-spread else two-three of ten of the years back. Many researchers separate the standpoint that he exist Weimar republic and as before functions in Heel to French republic. Finland. Sn-1 Portugal, some add hereto list Austria. Iceland and Ireland Beginning with 90-h past centuries, when row of the countries of the former Soviet Union and East were infused in "wave to democratizations"\ a part of them adapted the Prezidentialism of the rate, having bolted them constitutional Some authors b more forty Semi-Prezidential of the systems on political card of the modem including seventeen of them - on post socialist space In their count, calculate. Romania. Ukraine. Poland. Armenia. Federation of Russia. Lithuania and row Within the framework of given work will is analyzed formation, development evolution Semi-Prezidentialism in country of the Europe, stages of his(its) develop w ell as contents existing in scientific literature of the constitutional alternatives access institutional design.