Abstract: Disclosed is a data broadcasting contents authoring system which comprises: an authoring engine for modifying objects or images to fit to a data broadcasting format, and authoring new data broadcasting contents; a data converter for receiving the data broadcasting contents authored by the authoring engine, and converting the contents into a standard file format to fit to at least one data broadcasting standard; and a code generator for receiving the generated contents data from the authoring engine, and the converted contents data from the data converter, and converting them into a broadcasting contents format that fits at least one broadcasting standard. As described above, the present invention enables users to easily and quickly author desired data broadcasting contents using a WYSIWYG broadcasting contents development tool.