In this paper, we will make an syntactic analysis of the so-called Complex Relative Superlative Constructions(henceforth CRSCs) in Spanish. Bosque & Brucart(2002) and Rohena-Madrazo(2007) explain that the Spanish CRSCs are composed of a definite article, degree quantifiers(mas/menos) and a coda with prepositional phrase. They argue that the definite article is generated out of the relative clauses and does not have a direct relation with the embedded degree quantifier. We will show that the raising of degree quantifier in the CRSCs can be explained according to the Split Comp Hypothesis of Rizzi(1997). With this assumption, we will assume that the D-feature for the superlative interpretation is realized inside of ForceP. We will further show that there is a parametric variation in the Spanish of Puerto Rico, Canaria, Venezuela and Argentina with respect to the realization of the sequence ` el que` in Free Relatives.