The utility model discloses a hole wall deformation test device for simulation of hole room experiments, set up in the rigidity pole of the simulation indoor room in hole with fixed including the elasticity steel sheet, elasticity steel sheet one end is connected with the rigidity pole, and the other end links to each other with simulation hole room hole wall, and the deformation test device still includes and is used for gathering the meet an emergency determine module of deformation of elasticity steel sheet, being out of shape meeting an emergency of hole wall through the elasticity steel sheet that is connected with simulation hole room dong bi and carrying out the perception, the chronozone of hole room hole wall deformation promptly kinematic elasticity steel sheet is out of shape together, then through the deformation data of meeting an emergency that the determine module that meets an emergency gathered the elasticity steel sheet, obtains the true strain of hole room through demarcating to convert, the utility model discloses compact structure not only, occupation space is little, the simulation test hole that is applicable to the size easily less is indoor, in addition, installation convenient to use, can be accurate be out of shape data collection to meeting an emergency of simulation hole room hole wall, conveniently have fairly high application prospect in the deformation of excavation simulation test experiment of indoor small-size hole room and pipe wall etc..