Lee, Sang-Oh. 1999. Chain Formation by Feature Checking and Scope Ambiguity. Studies in Modern Grammar 17, 123-140. This paper aims at providing a plausible explanatory mechanism on the relative scope ambiguity between quantifiers in one sentence. Aoun & Li`s (1989, 1993) Minimal Binding Requirement and Scope Princsple, which have explained such ambiguity relations between quantifiers, leave some technical and conceptional problems in that some stipulations are to be required. However, the newly formed chains based on feature-checking in the minimalist theory suggested in Kitahara(1993), i.e., the distinct chains formed by feature-checking motivation based on the minimalist theory, give clear ways of explanation on the scope ambiguity between quantifiers in a sentence without any stipulations. Thus, following the present trends treating relative scope ambiguity relations without recourse to the rule of Quantifier Raising(QR) could be crucially supported by this kind of feature-checking approach to the scope ambiguity between quantifiers. Furthermore, it supports the argument for the quantification theory without recourse to the rule of QR.