In this article has studied history of preparation and conclusion of an Anglo-Russian peace treaty 6/18 July 1812 in Swedish town Orebro. This treaty was not only the treaty of peace but in fact the treaty of alliance. In conditions of outbreak of Patriotic war 1812 Alexander I expected immediate realization of the case stands. At the same time he didn’t want to concede the replacement of the Paris hegemony by London hegemony. So under conclusion of treaty with British Government the Imperator originally laid down conditions which enable to increase financial system and army of his country. But in 1812 St. Petersburg hadn’t any real the levers of pressure on Britain. At the end Alexander I refused to nearly all requests. He confined the only request to sending arms. He didn’t manage to realize his plan to found a new coalition. All the same the treaty in Orebro became the framework of sixth coalition which would be able to break power of Napoleon Empire.