The invention discloses a similar material simulation experiment device and a using method thereof. On the basis of existing technologies, a baffle rack is added, a pull-type retractable baffle is used, a right frame of an experiment machine is changed to a detachable structure, length sizes of models to perform simulation experiments of the similar material simulation experiment device can be adjusted at will, using functions of the similar material simulation experiment device are widened, the similar material simulation experiment device is multipurpose, and acquisition expenses and device installing space of the similar material simulation experiment device of a laboratory can be greatly reduced. Meanwhile, a sliding device is added in order to reduce operating difficulty of the experiment device, the adjustment of the right frame of the experiment device is simplified, and labor intensity of experiment operators can be greatly reduced. Compared with similar material simulation experiment devices and using methods thereof in the prior art, the similar material simulation experiment device and the using method thereof have the advantages that the structure is simple, the experiment operation is simple and convenient, the length size of the models can be adjusted at will, and time and effort are saved.