Criminal Records Sealing System for Minors in China, to a certain extent, is in keeping up with the trend of minors-protecting around the world, and it also reflects the concern of the legislators on public security. However, when it comes to the research of the criminal records sealing system for minors in China, there is an incorrect tendency to the protection of best interests of juveniles which is unconditional at theory-instruction level. Considering specific systematical constructing of criminal records sealing system for minors, there are some defects, for example, the stipulation is too rough and the supporting measures have not been put forward. Meanwhile, the balance of public security and juveniles interests is unscientific, and the connection of rehabilitation and criminal records sealing for minors is not enough. Therefore, in the process of perfection of criminal records sealing system for minors in China, we should avoid being instructed by wrongful theory, rather, we need to overcome the defects of systematical designing. And then we can reach the dual purposes, one is to protect the interests of juveniles and the second is to guarantee the public security.