There is provided a photoelectric composite module according to the present disclosure including: a first connecting member having an outer frame having a tubular shape, and a plurality of contacts provided in an interior of the outer frame； a first printed board on which a photoelectric conversion element configured to convert an electrical signal into an optical signal is mounted, and which is configured to act as a relay between the contacts and the photoelectric conversion element； and a second printed board configured to act as a relay between the contacts and an electrical signal cable. The first printed board and the second printed board are three-dimensionally arranged.
