1. An MFA (Metabolic Flux Analysis) information system capable of generating, editing, storing and visualizing an MFA model feature and an MFA object and editing, storing and visualizing the result obtained by performing MFA based on the MFA object, the system comprising: an MFA model feature authoring tool for generating a new MFA model feature or generating a DTD (Document Type Definition) or schema file of XML (eXtensible Markup Language) after collecting and editing the corresponding existing MFA model feature; an MFA object authoring tool for generating a new MFA object with reference to the DTD or schema file of XML generated by the MFA model feature authoring tool or storing an edited MFA object in the XML file after editing the corresponding existing MFA object; and an MFA object analysis browser for reading the DTD or schema file of XML generated by the MFA model feature authoring tool and the XML file stored by the MFA object authoring tool to visualize the MFA object, carrying out MFA based on the MFA object, and visualizing by integrating the MFA result with MFA object information.