This study was conducted to investigate the mediating effects of self-system traumatization and anger experience in the relationship between childhood trauma experiences and somatization in early adults. To this end, 250 people aged 20 to 39 were surveyed through an online survey. For the survey results, SPSS Model 4 and Model 6 were used to analyze the mediating effect between the main variables, and the significance of the mediating effect was confirmed through bootstrapping. The main results of this study can be summarized as follows. First, the mediating effect of self-system traumatization was significant in the relationship between childhood trauma experiences and somatization. Second, the mediating effect of anger experience was significant in the relationship between childhood trauma experiences and somatization. Third, the sequential mediating effect of self-system traumatization and anger experience was significant in the relationship between childhood trauma experiences and somatization. As such, academic contributions were added, such as identifying the path of what psychological mechanisms work in the relationship between childhood trauma experiences and somatization, and results can serve as significant basic data when counseling early adult clients with childhood trauma experiences.