The issue of Roman provinces governing is one of the most complicated touched upon by Plinius the Younger in his correspondence with the Emperor Thrayan concerning provincial affairs. According to Plinius the Younger#s #Letters# one can retrace private relations of the Emperor Thrayan and the Viphinia province deputy Plinius the Younger on such matters as: receiving of a #three children right#, independent town#s status, economy management and decision of religions problems. The analysis of original sources and bibliography that has been carried out allows to draw a conclusion about usefulness of private relations of the Emperor with his deputies for governing Rome and its provinces.