In the digital age, the escalating accessibility of the Internet to younger populations prompts significant concerns about its potential behavioral repercussions. The objective of this research is to investigate the connection between Internet use and externalizing problem behaviors in early adolescents. A total of 1155 Chinese early adolescents, ranging in age from 11 to 14 years, participated by completing an anonymous self-report questionnaire. The findings reveal that: (1) there is a positive correlation between the extent of Internet use and the prevalence of externalizing problem behaviors, suggesting a potential risk factor inherent in unregulated digital exposure; (2) both self-education expectations and peer relationships mediate the link between Internet use and externalizing problem behaviors, indicating that educational aspirations and social interactions play a pivotal role in mediating this impact; (3) Internet use indirectly influences externalizing problem behaviors through the sequential mediation of self-education expectations and peer relationships, outlining a complex interplay that influences behavioral outcomes; and (4) the influence of Internet use on externalizing problem behaviors shows notable differences based on gender and geographical location, with a greater adverse impact observed in males than in females and in rural settings compared to urban areas. These findings underscore the urgent need for bespoke strategies to mitigate the negative influences of Internet use on youth, tailored to address the specific challenges faced by different demographic groups. The study not only extends the current understanding of digital media’s impact on adolescent behavior but also catalyzes policy discussions aimed at fostering healthier digital environments for the younger generation.