The invention provides a method for preparing a titanium coping by utilizing supports. The method is characterized by comprising the following steps: selecting the occlusal surface of the coping as the supporting surface of the supports by adopting a CAD/CAM (computer-aided design/computer-aided manufacturing) system according to the shape of the coping and growth direction limitation in additive manufacturing, wherein the supports are columnar and are provided with tips at the top ends, and the tips of the supports carry out point contact with the supporting surface; completing sintering of titanium powder with a laser head according to set path motion and finally obtaining the coping with the supports; after cooling, taking down the coping with the supports and removing the supports. Compared with the prior art, the method has the advantages that limitation of the shape in the height direction in the laser rapid prototyping technology can be broken by virtue of optimal settings, such as selection and arrangement of the supports, thus improving the prototyping quality of the coping.