The article tackles the state of research on the cloister of Canons Regular in Mstów. It is highly likely that Canons Regular appeared in Mstów at the close of 12th century. The Mstów cloister reported to the local provost whose office was situated at the cloister of Our Lady in Breslau. In the course of centuries it played a major role in historical vicisitudes of Northwestern Lesser Poland. It was namely a focal point of social, ecclesiastical and cultural life, but also served as a research center. In 1212 the archbishop of Gniezno Henryk Kietlicz summoned a synod to Mstów, during which, together with a few other hierarchs, he ordained and consecrated father Paweł to the office of bishop. Cracow bishop Wincenty Kadłubek was also present in the synod. The wealthy legacy of Mstów cloister stretches from its foundation in 12th to its dismantlement in 19th century. This heritage is a powerful source of inspiration for scholars of many fields and it certainly will remain one. Notwithstanding, the state of research on this cloister in Polish historiography is fraught with blank spaces calling for scientific elucidation. A review of papers on this topic makes one conclude that there is a huge disparity of the development of research on the Middle Ages as compared to later epochs. The cloister of Mstów is waiting for a complete and critical description of its modern period history. The most in-depth studies were namely devoted to the period between the origins of the cloister in question and its 16th century history. Moreover, scientific literature has failed to study the roots of the cloister and social background of religious who made up its community.