The main goal of this research was to determine the expression of the precompetition anxiety of boxers, as well as to determine possible differences in the degree of precompetition anxiety between boxers of different ages and different boxing experiences. A total of 26 boxers filled out the CSAI-2 precompetition anxiety questionnaire (Competitive State Anxiety Inventory - 2) immediately before the competitive boxing match and answered questions about age, long-term practice of boxing and individual boxing achievement. The average results of the precompetition state of anxiety of boxers can be interpreted as moderate (cognitive anxiety, Mean=3.26) or as high (somatic anxiety, Mean=3.63; self-confidence, Mean=3.54). In the sample of boxers, no significant differences were found in the variables of the precompetition state of anxiety between the group of younger boxers and the group of older boxers. No significant differences were found in the variables of the precompetition state of anxiety between groups of boxers with different training experience regarding the duration of boxing training. Furthermore, no significant differences were found in the variables of the precompetition state of anxiety between the groups of boxers with different individual boxing achievements, but the group of boxers who achieved an individual achievement have a slightly higher self-confidence score than the group of boxers without achieved success. This research points both to the need for further research on the relationship between precompetition anxiety and other variables important for boxing, as well as to the need for additional education of boxing coaches regarding the development of high self-confidence and lowering the cognitive or somatic state of anxiety of their boxers.