This paper analyzes the content and setting of the anti-addiction system，and finds that there are many problems in the anti-addiction system in online games，for example，the anti-addiction system can be cracked by many ways，many cracking services on the Internet，some minors not addicted to the Internet，and some parents rely on anti-addiction system. Based on these problems，the existing anti-addiction system is improved by referring to some scholars’ research. Four key measures have been added，namely，self-evaluation of minors，classification of online game users，clarification of parents’ supervision role and adoption of step-by-step restrictions，in order to further improve the existing anti-addiction system of online games and protect the healthy growth of minors.