Using the example of the diocese of Wrocław in the 17th and 18th centuries, the article addresses the issue of implementing the obligation of regular visits to the Holy See, which was imposed on diocesan bishops by the Council of Trent. Based on the bull Romanus Pontifex of Pope Sixtus V of December 20, 15 and 5, "the bishops of Wrocław (as well as all others from this part of Europe) should go to Rome every four years and submit a written report there on the state of the diocese. Vatican sources contain 14 detailed accounts from Wrocław from 1603-1777. These accounts show that the bishops of Wrocław treated this obligation in a rather formalistic way. They very rarely observed the four-year period required by the bull of Sixtus V - often it was only one visit during the entire reign of a given bishop. They also did not pay visits in person, but were represented by special prosecutors approved by Rome, mostly canons, who were also the authors of reports. Since there were no specific regulations or schemes for preparing reports until 1740, they varied greatly in scope and content. The most extensive and richest content comes from bishops Sebastian Rostock (1667), Frederick of Hesse (1678) and Franciszek Ludwig (1708). The reports focus on the statistical description of the diocese (diocese with a cathedral, chapter and episcopal residence, diocesan institutions, administrative structure of the diocese, monasteries in its area), but rarely include an analysis of the religious structure and the political conditions in which the Catholic Church exists. There was much less information about the clergy and believers. Noteworthy are the actions taken by some Wrocław bishops to eliminate the shortcomings and intensify religious life in Silesia.