Purpose of work? studying the Ambassadorial order during its institutional evolution, identifying changes in the budget in this regard, personnel, structure and functions, which led to the transformation of the order from an institution, engaged in foreign policy and at the same time possessing broad competence in domestic affairs, to the sectoral department, the main function of which by the beginning of the second decade of the XVIII century. and the naphone of reforms in the country as a whole became exclusively diplomacy.