Discrimination phenomena have been a particular concern both internationally and nationally in recent times. For this reason this subject has been intensively legislated on, giving special relevance to the issue of gender. One of the most important legislations both for its pioneering development and for the wide range of possible discrimination that covers is the CEDAW, which introduces the principle of intersectionality and thus extends the protection of women in cases of multiple discrimination. In this paper this legislation is analized in the light of that intersectional framework that allows us to see how the various exclusion factors that result in violations of the Human Rights are addressed theoretically and legislatively, and more specifically is analyzed the case of immigrant women, as they are very prone to this type of discrimination. It will be also noted the implementation of this policy in Spain and the scope of the intersectional conception as well as the result of this legislation specifically on immigrant women. The results of this research are interesting from the point of view of the CEDAW inner self, having to better define its concepts, and from an external point of view about the difficulties of its application in Spain. We have built a critical analysis by analyzing the light and shadows of this legislation.