The notion of maximal almost rigid representations was firstly introduced by Barnard, Gunawan, Meehan and Schiffler to study the representation theory of type A quivers. It is a class of important objects from algebraic, geometric and combinatorial perspective. In this talk, I will introduce an analogue of maximal almost rigid representations which we call maximal pre-rigid representations over certain type D quivers, provide a geometric realization for maximal pre-rigid representations, and then show their general form as well as their application in the tilting theory.