An apparatus and method for modeling a cultural heritage building, which may intuitively model a 3D digital cultural heritage building while exhibiting the characteristics of the 3D digital cultural heritage building, through the use of a touch screen UI on a smart mobile device in a place where it is difficult to use a PC or existing software. The disclosed apparatus includes a measured drawing arrangement unit for displaying, on a touch screen, measured drawings that include information about members constituting a cultural heritage building, a member model generation unit for performing modeling based on multiple points input via the touch screen, thus generating 3D member models, a database for storing the member models generated by the member model generation unit, and a member arrangement unit for arranging each of the stored member models at an original location thereof based on the measured drawings.
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