Abstract At present it is impossible not to recognize the existing interrelation of different sciences in all professional fields. This article analyzes the close relationship between the Science of Law and the Science of Computing, through Computer Law and Legal Information, concepts that recurrently fall into confusion in their meaning, use and fields of application, which without a doubt it is indispensable to know the professionals of Law and Information Technology. Keywords: Law, Informatics, Laws, Crimes, Computation.