This document analyzes the comparative changes between the Juvenile Justice Act of 2015 and the amendments introduced in 2021, focusing on their effectiveness in preventing juvenile delinquency. It highlights key areas such as age thresholds for heinous offenses, the role of district magistrates, and new definitions for serious offenses, emphasizing a shift toward accountability and comprehensive rehabilitation. The findings suggest that while the amendments aim to address contemporary challenges, their success depends on effective implementation and resource allocation.