relates to an integrated business processing system,in which a conventional Internet web server-based unidirectional remote control system is improved to be a bidirectional PC remote control system in a one-to-one PC access state, a variety of functions, such as a tablet function for supporting the writing of letters and the drawing of figures, is added thereto, and various business processes are smoothly performed through the association of a client PC system, a consultant PC system, a franchise head office system, an assistant business PC system in terms of a business task, a construction site business processing PC system, an custom-built and material development PC system, a company head office warehouse and factory PC system, and a developing country production factory and export/import management PC system, based on a unidirectional or bidirectional PC