Provided is an environment control house 1 which can have improved strength by employing a multifaceted structure. The environment controlled greenhouse 1 comprises: a main body portion 10 and a pair of wall portions 20, wherein the main body portion 10 comprises: a top surface portion 101 formed into a rectangular shape and disposed at the topmost portion； a pair of rectangular upper skirt surface portions 102 connectedly installed to respective edges in the transverse direction of the top surface portion 101； and a pair of rectangular lower skirt surface portions 103 connectedly installed to an edge in the installation direction of the respective upper skirt surface portions 102 and disposed in a sloped manner with respect to an installation surface L, and wherein each of the wall portions 20 comprises: a center wall surface portion 210 connectedly installed to the edge in the longitudinal direction of the top surface portion 101； a pair of middle wall surface portions 220 connectedly installed to respective edges in the transverse direction of the center wall surface portion 210 and to the edge in the longitudinal direction of the upper skirt surface portion 102； and a pair of side wall surface portions 230 connectedly installed to an edge in the transverse direction of the respective middle wall surface portions 220 and to an edge in the longitudinal direction of the respective lower skirt surface portions 103.
