There is a problem of finding out the cognitive barriers during the pedagogical practice (teaching practice) among students of training college in the article. We made an analysis of the definition "pedagogical barriers" among Russian and foreign researchers. The author's definition of this notion is given. The importance of early finding out pedagogical barriers and working out the ways of preventive measures are presented. The methods and approaches used during the experiment are described. The results of the research on finding out pedagogical barriers are given.