Disclosed are an integrated authoring system for an electronic technical manual and a paper technical manual using logistics support analysis data, which is capable of authoring an interactive electronic technical manual (IETM) of Class IV level and a paper technical manual at the same time. The integrated authoring system for an electronic technical manual and a paper technical manual using logistics support analysis data comprises: an iCAST-LSA (intelligent computer based acquisition support tool-logistics support analysis) module; a TMM (Technical Manual Management) module for performing a technical manual management function by importing from the DB of the iCAST-LSA module or exporting to the DB of the iCAST-LSA module; an illustrated drawing manager module; and a TMA (Technical Manual Author) module for performing a manual author manager function for sending and receiving illustrated drawings (ID) or CGM data to and from the illustrated drawing manager module.