A new type of Authoring System for 3DCG animation is developed in which a user can easily manipulate three dimensional objects in three dimensional simulated space on the computer. The user can use programing, programming palette and several hardware interfaces to manipulate object comfortably with the help of turtle metaphor. All the manipulations of objects, cameras, lights and turtle are possible using turtle command in our system, so DMI for 3DCG animation is realized in this research. Categories and Subject Descriptors I.3.4 [Graphic Utilities]: Graphic Utilities – Picture description languages, Virtual device interfaces General Terms Design, Human Factors, Languages Keywords 3DCG Authoring System, Object oriented 3D LOGO, Game Rapid Prototyping Tool, Cognitive Interface