Nowadays the rapid development of new communication devices is so amazing, these devices indeed bring people countless convenience for living. But water is a boon in the desert, but the drowning man curses it, the criminals in our society also make use of communication devices to commit crimes. If the authorities do not take advantage of communication devices to investigate the crimes, it will be harmful to the protection of national society.
At the same time, because of the way investigation agency do investigate is classified to secret investigation. This way leads to the whole investigation process in an uncertain state, we cannot do any research with conversations talked by the man who is under investigation. So, we found that there is a lot of crimes which are separated action in technically. The content of separated action is applicable to force of evidence. During 2014, after the amendment of the Law of Communication Protection, this law is applied to the principle excluded regulation and results in disadvantage of investigation of crimes in practice. This article tries to discuss the content about communication investigation extending to find separated cases whether applicable to The Code of Criminal Procedure.
