The new integrated circuit concept that forms electronic equipment by the textile structure using the flexible fiber has been proposed. In this report, we propose another integrated system-concept of flexible electronics based on "braid structure." The braid integrated system forms electronic equipment constructed by the filamentous body. Electronic integrated circuits are constructed with kumihimo-structure by weaving more than eight threads on which field effect transistors, photoelectric transducers, contact electrode pad and wiring pattern are mounted periodically. The circuit composition and a concrete structure of threads for kumihimo are discussed.