Regulations indicate operation’s norms of the universities libraries. In the institutions we have chosen for our study (universities in Andalucía), these regulations have been recently created or are still in a making phase, even, some universities, haven’t a projet to elaborate its regulations. Regulations include a lot of different aspects, these contain, for example, the libraries’ organisation and functions, the lending norms or the recommendations to use the old bookes. The work plan is: in the first part we make a general and currently study about these universities libraries taking the point of view of its regulations, gathering in one group, those which have regulations, in another one, those which have them in an elaboration phase, and, in the last one, those which are directed by other different kind of nomative. In the second part we describe regulations’ structure and content, carrying out a brief comparative analysis. In the last part, we present our conclusions and biography.