A decline in adolescent health holds significant repercussions for public health. Promoting exercise is essential to improve physical and mental health among youth. This study aimed to explore the effect of CrossFit training programs on the physical health and sociogenic somatic anxiety of adolescents. In March 2023, 100 adolescents were openly recruited from eight middle schools in Jinhua, China. The participants, were divided equally into control and experimental groups, experienced either traditional or CrossFit training, respectively, over nine weeks. Evaluation measures included the analysis of social physique anxiety, body esteem, physical self-efficacy, and general physical health before and after the exercise program. Post-intervention data demonstrated marked reductions across all facets of the social physique anxiety scale, including worries about public scrutiny, anxiety from social comparison, and discomfort related to one's physical self-image, more so in the experimental group (P<0.05). Likewise, assessments of the physical self-perception profile and physical self-efficacy scale were enhanced, again with the experimental cohort displaying more pronounced improvements (P<0.05). Results from biophysical function evaluations indicated significant health improvements post-intervention, with noted advancements in lung capacity, aerobic fitness by the standing long jump, and muscular endurance as assessed by grip strength, sit-up, and push-up counts, primarily in the experimental group (P<0.05). CrossFit training offered considerable advantages by reducing social physique anxiety and enhancing adolescents' body esteem and physical self-efficacy. The program stimulated improvements in body composition, cardiorespiratory fitness, muscle strength, and flexibility.