To dispense with alignment or correction of optical axes by eliminating optical axis adjustment between a photoelectric element 2 and an optical transmission line 1 and providing a state of permanently aligned optical axes from the original manufacture to the subsequent use of the module.

The photoelectric coupling/transmitting module is equipped with the optical transmission line 1 for guiding and transmitting light and with the spherical photoelectric element 2 installed at the end or in the middle part of this transmission line 1. The photoelectric element 2 has a transparent spherical body 5 installed at the end or in the middle part of the transmission line 1, a light emitting film 7 provided on the outer circumference of the spherical body 5, and a pair of inside and outside electrodes 6, 8 designed to hold this light emitting film 7 in-between.