Relying on the whole process of computer-aided animation automatic generation technology, the ultimate aim of mobile 3D animation automatic generation system is to realize automatic animation of text message content. Camera planning, the direct approach to describe the theme of text message, is the important task of the mobile phone 3D animation automatic generation system, and has established complete qualitative and quantitative planning process. On the basis of the existing relevant theories, this study sums up the common rules in the field of photography, constructs the repository of the camera director by using the semantic web ontology language, accomplishes the two levels rule derivation of the camera's qualitative planning based on the director's repository, and ultimately implements the automatic generation of the camera planning in the mobile 3D animation automatic generation system.