The interactive influence of online platforms and the real environment on the dissemination of body image is an important factor influencing young women's negative body image, and it is important to explore the formation mechanism of young women's negative body image from the perspective of interactive information dissemination for the healthy development of young women's body and mind. This study selected a sample of 24 female university students and used the rooting theory to investigate the formation of negative body image of young women from the perspective of interactive information communication. Finally, 60 initial concepts, 13 sub-categories and 2two main categories were extracted, forming a model of the formation mechanism of young women's negative body image from the perspective of interactive information communication, and the influencing factors such as main categories, sub-categories and initial concepts and the logical relationship between them were explored. The results of this study provide a new theoretical basis for further research and definition of the structural dimensions and systems of female negative body image formation, and are a practical and innovative approach to the traditional model of body image influencing factors in an interactive information context.context.