A prefabricated dinosaur model comprising: a skeleton frame including a head bone part , a neck bone part , a trunk bone part , a tail bone part , and a leg bone part , and forming a skeleton corresponding to an appearance of the dinosaur when assembled; a joint connection part provided at a connection portion of the skeleton frame to enable movement of the skeleton frame ; and an outer skin including a head skin part coupled to an outer side of the head bone part , a neck skin part coupled to an outer side of the neck bone part , a trunk skin part coupled to an outer side of the trunk bone part , a tail skin part coupled to an outer side of the tail bone part , and a leg skin part coupled to an outer side of the leg bone part , characterized in that the head skin part , the neck skin part , the trunk skin part , the tail skin part , and the leg skin part are detachably coupled directly to corresponding parts of the skeleton frame , the head bone part includes a skull , and a jawbone moveably coupled to the skull to open and close a mouth, a first hinge member is rotatably connected to an inner side of the skull , and a second hinge member is rotatably connected to an inner side of the jawbone and also connected to the first hinge member , a rotating shaft is provided at a location where the first hinge member and the second hinge member are connected to each other, and a tongue is protrudingly provided at a side of the rotating shaft , and the tongue is moved back and forth in response to movement of the jawbone with respect to the head bone part such that a fore end portion thereof is moved in and out of the head bone part . a skeleton frame including a head bone part , a neck bone part , a trunk bone part , a tail bone part , and a leg bone part , and forming a skeleton corresponding to an appearance of the dinosaur when assembled; a joint connection part provided at a connection portion of the skeleton frame to enable movement of the skeleton frame ; and an outer skin including a head skin part coupled to an outer side of the head bone part , a neck skin part coupled to an outer side of the neck bone part , a trunk skin part coupled to an outer side of the trunk bone part , a tail skin part coupled to an outer side of the tail bone part , and a leg skin part coupled to an outer side of the leg bone part , characterized in that the head skin part , the neck skin part , the trunk skin part , the tail skin part , and the leg skin part are detachably coupled directly to corresponding parts of the skeleton frame , the head bone part includes a skull , and a jawbone moveably coupled to the skull to open and close a mouth, a first hinge member is rotatably connected to an inner side of the skull , and a second hinge member is rotatably connected to an inner side of the jawbone and also connected to the first hinge member , a rotating shaft is provided at a location where the first hinge member and the second hinge member are connected to each other, and a tongue is protrudingly provided at a side of the rotating shaft , and the tongue is moved back and forth in response to movement of the jawbone with respect to the head bone part such that a fore end portion thereof is moved in and out of the head bone part . <EOS>