A method of providing a surgery simulation, which is performed by one or more processors of a computing device, the method comprising: generating three-dimensional modeling data on the basis of a medical image; generating a user interface including the 3D modeling data, and providing the user interface to a user terminal; and generating surgery simulation result data by performing the surgery simulation on the basis of a response to the user interface, the response being received from the user terminal; wherein the generating of the 3D modeling data comprises: identifying one or more landmarks on the medical image; and generating the 3D modeling data by performing segmentation on the medical image; and wherein the generating of the surgery simulation result data comprises: setting axes and reference points corresponding to the 3D modeling data on the basis of the one or more landmarks; determining an object to be moved for surgery; and performing the surgery simulation by moving and rotating the object on the basis of the set axes and reference points, wherein the surgery simulation comprises a plurality of operations of a surgery, the plurality of operations of the surgery comprising: a first operation of moving the object on a first axis; a second operation of rotating the object about a first landmark on a second axis; a third operation of rotating the object about a second landmark on a third axis, the third axis being a line segment generated on the basis of the first landmark and the second landmark; a fourth operation of moving the object on the second axis; a fifth operation of rotating the object by setting the first landmark as an origin of rotation and the first axis as an axis of rotation; and a sixth operation of moving the object on a fourth axis. generating three-dimensional modeling data on the basis of a medical image; generating a user interface including the 3D modeling data, and providing the user interface to a user terminal; and generating surgery simulation result data by performing the surgery simulation on the basis of a response to the user interface, the response being received from the user terminal; wherein the generating of the 3D modeling data comprises: identifying one or more landmarks on the medical image; and generating the 3D modeling data by performing segmentation on the medical image; and identifying one or more landmarks on the medical image; and generating the 3D modeling data by performing segmentation on the medical image; and setting axes and reference points corresponding to the 3D modeling data on the basis of the one or more landmarks; determining an object to be moved for surgery; and performing the surgery simulation by moving and rotating the object on the basis of the set axes and reference points, wherein the surgery simulation comprises a plurality of operations of a surgery, the plurality of operations of the surgery comprising: a first operation of moving the object on a first axis; a second operation of rotating the object about a first landmark on a second axis; a third operation of rotating the object about a second landmark on a third axis, the third axis being a line segment generated on the basis of the first landmark and the second landmark; a fourth operation of moving the object on the second axis; a fifth operation of rotating the object by setting the first landmark as an origin of rotation and the first axis as an axis of rotation; and a sixth operation of moving the object on a fourth axis. a first operation of moving the object on a first axis; a second operation of rotating the object about a first landmark on a second axis; a third operation of rotating the object about a second landmark on a third axis, the third axis being a line segment generated on the basis of the first landmark and the second landmark; a fourth operation of moving the object on the second axis; a fifth operation of rotating the object by setting the first landmark as an origin of rotation and the first axis as an axis of rotation; and a sixth operation of moving the object on a fourth axis.