Amidst the rapid proliferation of the internet and social media, juvenile crime has surged, escalating societal concern over youth delinquency. Against this backdrop, discourse on "malicious age supplementation" gradually emerges as a focal point of public and academic scrutiny. This system aims to recalibrate the legal boundaries of juvenile crime responsibility, meting out harsher legal sanctions for premeditated, malicious juvenile offenses, thereby remedying the deficiencies of existing criminal law in addressing certain juvenile delinquent behaviors. Endeavoring to dissect the social causes, psychological mechanisms, and preventative strategies of juvenile delinquency from different perspectives. However, effectively integrating this system into the legal frameworks of different countries necessitates consideration of their unique cultural contexts, legal traditions, and social environments, presenting a complex and challenging endeavor.