The present invention relates to an interior simulation system which comprises: an interior server in which an interior program is operated to output a virtual interior state at a desired position; a manager computer installed to input information of a consumer while being connected to the interior server in a wired or a wireless manner and outputting the virtual interior state into as a 2D or a 3D state; and a user terminal connected to the manager terminal or connected to the server through a communication company network. By reflecting interior information or big data information input by a user, the virtual interior state is output, and a color change state of an interior according to a change in illuminance is output.
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