Abstarct: Abstract In this thesis, we explore the internal structure of a hairy black hole in the context of non-linear massive gravity. We first consider the case of neutral scalar field, we show in the presence of non-trivial scalar field, there would be no cauchy horizon and also the instability of the cauchy horizon triggered by the scalar field is associated to a rapid collapse of the Einstein-Rosen bridge. Finally we will see near the spacelike singularity geometry takes a general Kasner form. After reviewing the case of neutral scalar field, we examine the impact of charged scalar field. Like a standard holographic superconductor system,just below the critical temperature, the interior evolves through several distinct epochs, including a collapse of the Einstein-Rosen bridge, Josephson oscillations of the scalar field, and finally a Kasner(or Kasner inversion) cosmology. However, for the large massive gravity parameter, we see distinguishing features for the interior dynamics. In this respect, at a given temperature, the Einstein-Rosen bridge collapse and subsequent Josephson oscillations epochs completely disappear from the interior dynamics and the final Kasner cosmology epoch starts exactly after the would-be inner horizon and the system does not experience the Kasner inversion epoch.