In the National Spatial Strategy Plan of SCETIRAN and Republic Islamic, to adjustment of spatial problems and regional imbalance of country, particulur in Tehran and Mazanderan (and Golestan) provinces, have become particular view to Semnan province. In this plans, which prepared for years 1970 to 2002, the policy of surplus population obsorbtion of Tehran and Mazanderan provinces to Semnan province have been proposed. In this plans have foreseen which population of province increased with rate of 4.8 percent yearly and thus reached to 902000 person in 2002. The population of Semnan province in 2002 is 555478 person, and indicates which operation of plans have been poored. In this article with regard to economic and social changes of semnan province in 1979 to 2002, the operation of national spatial strategy plan is evaluated and discussed. Therefore, the factors of unsuccessed of plans is analysed and finally have presented the propositions for spatial strategy in nation and regional levels.
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