The article presents an acmeological approach to research the process of tolerant mentality formation of University students. Based on the comparison criteria of an acmeological maturity of personality and a formation of tolerant personality it concludes a meaningful proximity of these characteristics. According to the analysis of the research the leading role of confidence in a social world as the basis of tolerant mentality formation of personality and one of the basic conditions defining level of acmeological maturity of personality is defined.